NATIONAL SCIENTIFIC CORP/AZ
10SB12G/A, 2000-01-20
SEMICONDUCTORS & RELATED DEVICES
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                                  UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549

                                   FORM 10-SB/A
                                 AMENDMENT NO. 1

                        GENERAL FORM FOR REGISTRATION OF
                   SECURITIES OF SMALL BUSINESS ISSUERS UNDER
         SECTION 12(b) or 12(g) OF THE SECURITIES EXCHANGE ACT OF 1934


                         NATIONAL SCIENTIFIC CORPORATION
                 ----------------------------------------------
                 (Name of Small Business Issuer in its Charter)


            Texas                                              86-0837077
- -------------------------------                           -------------------
(State or other jurisdiction of                            (I.R.S. Employer
incorporation or organization)                            Identification No.)


  4455 East Camelback Road, Suite E160                      Phoenix, AZ 85018
- ----------------------------------------                    -----------------
(Address of principal executive offices)                       (Zip Code)


                                 (602) 954-1492
                            -------------------------
                            Issuer's telephone number


       Securities to be registered pursuant to Section 12(b) of the Act.

                        Preferred Stock, $0.10 par value


       Securities to be registered pursuant to Section 12(g) of the Act.

                          Common Stock, $0.01 par value
<PAGE>
                                TABLE OF CONTENTS

PART I

     Item 1. Description of Business .......................................   1

     Item 2. Management's Discussion and Analysis of Financial
             Condition and Results of Operations ...........................   9

     Item 3. Description of Property .......................................  11

     Item 4. Security Ownership of Certain Beneficial Owners
             and Management ................................................  12

     Item 5. Directors, Executive Officers, Promoters and
             Control Persons ...............................................  12

     Item 6. Executive Compensation ........................................  14

     Item 7. Certain Relationships and Related Transactions ................  14

     Item 8. Description of Securities .....................................  15

PART II

     Item 1. Market Price of and Dividends on the Company's Common
             Equity and Other Shareholder Matters ..........................  16

     Item 2. Legal Proceedings .............................................  17

     Item 3. Changes in and Disagreements with Accountants .................  17

     Item 4. Recent Sales of Unrestricted Securities .......................  17

     Item 5. Indemnification of Directors and Officers .....................  17

PART F/S

     Index to Financial Statements ......................................... F-1

PART III

     Item 1. Index to Exhibits

SIGNATURES
<PAGE>
                                     PART I

ITEM 1. DESCRIPTION OF BUSINESS

OVERVIEW

National Scientific  Corporation,  a Texas corporation  ("NSC"),  was originally
formed  in 1953 as  American  Mortgage  Company,  Inc.  In  1993,  NSC  became a
subsidiary  of A.F.M.S.,  Inc. In 1994,  U.S.  Network  Funding,  Inc.  acquired
A.F.M.S.,  Inc.,  including  controlling  interest in American Mortgage Company,
Inc. In 1995, U.S. Network Funding, Inc., divested itself of A.F.M.S.,  Inc. and
made  a  dividend  distribution  of  American  Mortgage  Company,  Inc.  to  its
shareholders.

On May 16, 1996, the Company changed its name to National Scientific Corporation
and began its  operations.  NSC added several key  individuals to its management
team,  who  have  significant   expertise  in  the  electronic   components  and
semiconductor fields, as well as experience in leadership as executives of major
corporations.

NSC acquired the  operations  of Eden Systems as a  wholly-owned  subsidiary  in
1996.  Eden  was  engaged  in the  water  reclamation  business  and the sale of
environmentally  sensitive  cleaning  products.  Eden's  operations were sold on
September 30, 1997.

NSC is a development stage company.  NSC's current business involves development
of several products in the electronics  industry.  We intend to provide enhanced
products  and   processes   to  the   semiconductor,   integrated   circuit  and
telecommunications industries through joint ventures,  developmental agreements,
licensing and other mutually beneficial arrangements.

NSC's operating  losses were $772,545 and $699,085 for the years ended September
30, 1998 and 1999,  respectively  and had no revenues for those years. See "Part
F/S-Financial Statements."

NSC occupies approximately 575 square feet of executive office space in Phoenix,
Arizona.

PRODUCTS

We believe our  products  and  processes  will  directly  affect many aspects of
quality  standards  in the  electronics  manufacturing  industry.  This  will be
accomplished by application of our proprietary component designs. We believe our
components will simplify the manufacturing  process through  standardization  of
the size and shape of passive  components  and through  application  of our high
speed, high efficiency transistors.

The manufacturing process for virtually all consumer,  industry and governmental
electronic products will become much less complicated than it is now. There will
be less  "rejects" and the products will be more compact,  faster and be able to
perform  many more  functions  than is possible  using  current  technology  and
processes.  The  results  will be  cheaper  products,  that do  more,  are  more
reliable,  are  produced  faster  with  fewer  steps  and  smaller  standardized
components.
<PAGE>
During  the past  three  years of  operations,  five  research  and  development
projects have been brought to the patent application stage. Our first patent was
awarded June 15, 1999. The initial five projects for NSC are:

On  September  30,  1997,  a U.S.  patent  application  was  filed  by NSC for a
Hetrojunction  Bipolar  Transistor  (HBT).  On September  8, 1998,  we filed the
Patent Cooperation Treaty international patent application for this device.

Bipolar  transistors  are used in the  manufacture  of digital  circuits such as
cellular phones,  personal  computers and automotive  circuitry.  The demand for
faster and more efficient signal  processing has been a driving force behind the
enormous  prosperity of the world  electronics  market in the last decade.  This
design  of the  HBT  will  be  used  to  create  faster  devices  with  superior
performance in high speed digital circuits,  high frequency  microwave  circuits
and linear applications.

U.S. Patent 5,912,481 was issued for this device on June 15, 1999.

NSC filed a U.S.  patent  application  on October  31,  1997,  for a  Monolithic
Inductor.   On  October  27,  1998,  we  filed  the  Patent  Cooperation  Treaty
international  patent application.  The inductor is 100% compatible with current
integrated circuit manufacturing  technology and requires no additional steps to
be included in the manufacturing process.

Inductors and/or coils are used in the broadest range of electronic circuits for
telecommunications  applications. Since our device can be easily included within
an integrated circuit, it offers manufacturers  dramatic cost reductions through
simplified design,  assembly and testing. In addition, the new device will allow
for significantly increased  miniaturization,  a critical factor for electronics
manufacturer circuit technology.

The U.S.  Patent  Office issued a Notice of Allowance  for this  application  on
September 7, 1999.

On December 17, 1997, a U.S. patent application was filed for a High Performance
N-Channel  Metal-Oxide-Semiconductor  (NMOS) Static Random Access Memory (SRAM).
On December  15,  1998,  we filed the Patent  Cooperation  Treaty  international
patent application for this device.

SRAM and DRAM  (dynamic  random  access  memory)  memories  are key and integral
components of digital  computing devices such as  microcomputers,  workstations,
etc.,  which  depend  on  an  ever  increasing   amount  of  memory  to  improve
performance. Any improvement in chip size amounts to a considerable reduction in
cost.

We filed  our  fourth  U.S.  patent  application  on June 18,  1998,  for a Mode
Dielectric  Resonator.  The Patent Cooperation Treaty international  application
for  this  device  was  filed  on May  26,  1999.  Resonators  are  used in many
applications,  including microwave  oscillators,  narrowband  microwave filters,
radar  detectors,  speed guns,  automatic  door  openers,  cellular and portable
phones and global positioning satellites.

On July 10, 1998, we filed our fifth U.S.  patent  application for a Distributed
Amplifier.  On June  15,  1999,  the  Patent  Cooperation  Treaty  international
application for this device was filed.

                                       2
<PAGE>
Amplifiers are used in all electronic  products that require some level of power
increase   such  as   telecommunication   and   microwave   products,   internet
communications,  automotive  products,  biomedical products and in virtually all
automated manufacturing functions.

The U.S.  Patent  Office  issued a Notice of  Allowance on this  application  on
September 29, 1999.

SALES AND MARKETING

We have done extensive research regarding the major semiconductor  manufacturing
companies and their  products and the  manufacturing  processes.  The results of
this research have confirmed the belief of our management and  consultants  that
the increased performance and efficiencies inherent in the products currently in
various  stages of design and  development  are of  interest  to  virtually  all
sectors of the industry.

The  existing   markets  where  our  enhanced   products  and   processes   have
applicability  are  already  multi-billion  dollar  markets.  The  semiconductor
industry is an on-going  process to create  devices that do more, are faster and
cost less. We believe our products will aid this  revolution  and create profits
for NSC and increase value for its shareholders.

We believe  our new  technologies  may  become  marketable  products  quicker by
licensing  and/or   partnering  with  on-going   companies  with   complementary
technologies. Our goal is to identify and complete these agreements.  Management
has  undertaken an  aggressive  search for  candidates  and is in the process of
conducting  investigations,  technology evaluations and preliminary negotiations
with  potential  licensees/partners.  No  agreements  have been reached with any
potential licensee or partner, except Siagri International, Inc.

INDUSTRY

Our  management  and  consulting  team is committed to  thoroughly  research the
specific  needs of the  electronic  products  industry.  We believe the need for
increased  speed in  manufacturing  and delivery is paramount in  maintaining  a
profit  margin  for  the  electronic  product  providers.  NSC is  committed  to
providing  the  intellect,  experience,  drive  and  the  technical  innovations
required  to address  the needs of the  semiconductor,  integrated  circuit  and
telecommunication industries.

BUSINESS STRATEGY

Our mission is to develop significant  enhancements for existing  semiconductor,
integrated  circuit  and other  electronic  component  products,  processes  and
markets. We intend to utilize unique,  patentable technologies and provide these
enhancements to the market place through joint venture licensing agreements with
leading manufacturing firms.

We do not intend to  manufacture  any of our own  products.  We do not intend to
sell our products or  processing  methods,  but will protect  these  through the
patent process, both domestically and internationally.

                                       3
<PAGE>
NSC intends to continue research and development efforts,  including simulations
and creation of working prototypes, where possible.  Management has no intention
of limiting NSC to these five (5)  products.  Research and  development  will be
accomplished  through our on-going  association with an independent lab and test
facilities at a major Arizona university.

MARKETING METHODS

In  August  1999,  we hired a  marketing  consultant  to  execute  our sales and
marketing programs.  This individual is an applications engineer who is familiar
with both our existing products and potential licensing customers.

CUSTOMERS

NSC has a binding  letter of intent  with  Siagri  International,  Inc.  for the
development of a specific  frequency of our  Distributed  Amplifier.  It will be
used as a  component  in their  microwave  generator  devices.  We will  receive
royalties  equal to 5% of our amplifier's  contribution to the generator  "gross
sale price".

To  expedite  the  project,  Siagri  has  contracted  with  our  lead  technical
consultant, Dr. El-Sharawy, to design and build a prototype amplifier for use in
their devices.

Dr. Richard Besserman, MD, the CEO of Siagri, has disclosed Siagri's activity is
in testing the  effectiveness  of  electromagnetic  treatment in human medicine,
veterinary   medicine,   food  safety  and  agriculture.   Siagri  will  conduct
experiments  at two major  universities  to determine  the effects of controlled
microwave energy on disease causing bacteria and viruses.

We have not realized any revenues from our existing products and processes.

PATENTS

Please refer to the PRODUCTS section of this report for specific  information on
the status of NSC's existing patents and applications.

We endeavor to protect our intellectual  property rights through our patents and
patents pending;  however, we can't be sure that NSC will be able to protect its
technology  adequately or that competitors will not develop similar  technology.
We can't be sure that any patent applications NSC has filed or will file will be
issued  or  that  foreign   intellectual   property   laws  will  protect  NSC's
intellectual  property rights. Other companies and inventors may receive patents
that contain claims  applicable to our products and processes.  The use of NSC's
products and processes  covered by such patents could require  licenses that may
not be available on acceptable  terms, if at all. In addition,  we can't be sure
that patent applications will result in issued patents.

Although there are no pending claims or lawsuits against NSC regarding  possible
infringement claims, we can't be sure that infringement claims by third parties,
or claims for  indemnification  resulting from infringement  claims, will not be
asserted  in the  future.  Any  such  assertions,  if  proven  to be  true,  may
materially  adversely affect NSC's business,  financial condition and results of

                                       4
<PAGE>
operations.  In the future, we may be forced to litigate to enforce our patents,
to protect our trade  secrets or  know-how  owned by us or to defend NSC against
claimed  infringement  of the  rights of others and to  determine  the scope and
validity of the proprietary  rights of others.  Any such litigation could result
in  substantial  cost and  diversion  of  resources  by NSC,  which could have a
material adverse effect on our financial condition and results of operations.

Adverse   determinations  in  such  litigation  could  result  in  our  loss  of
proprietary  rights,  subject NSC to  significant  liabilities to third parties,
require us to seek  licenses  from third  parties or prevent us from  selling or
licensing  our products  and/or  processes.  This could have a material  adverse
effect on NSC's financial condition and results of operations.  In addition,  we
can't be sure that a license under a third party's intellectual  property rights
will be  available  on  reasonable  terms,  if at all.  See  "FACTORS  AFFECTING
OPERATING RESULTS-PATENTS, LICENSES AND INTELLECTUAL PROPERTY CLAIMS."

COMPETITION

Our competitors are well established and have  significantly  greater  resources
than us. Although we believe that our products and processes are proprietary and
protected  by  patents  and/or  patents  pending,  we can't be sure  that we can
compete   successfully  in  the  semiconductor  and  electronics   markets.  See
"PATENTS-FACTORS AFFECTING OPERATING RESULTS."

RESEARCH AND DEVELOPMENT

NSC has conducted several simulations and/or developed working prototypes of its
products  and  processes  that have yielded  results  that we feel  separate our
products from those currently in the marketplace. We can't be sure that our test
results will prove successful in the actual  marketplace or that we will be able
to develop additional new products or processes.

As of September 30, 1999, we have two part-time technical consultants engaged in
research and  development.  We also use the services of an  independent  lab and
test  facilities  at a major  university  under the  direction of our  technical
consultants.  Expenditures  for  research and  development  for the years ending
September 30, 1998 and 1999 totaled $321,067 and $130,463, respectively.

EMPLOYEES

We have a total of five (5) on staff, three (3) full-time and two (2) part-time.
We believe all relations are good.

FACTORS AFFECTING OPERATING RESULTS

This Registration  Statement  contains  forward-looking  statements that involve
risk and uncertainties.  The statements contained in this Registration Statement
that are not purely historical are forward-looking statements within the meaning
of Section 27A of the  Securities  Act of 1933 and Section 21E of the Securities
Exchange Act of 1934, including, without limitation,  statements regarding NSC's
expectations,  beliefs,  intentions or  strategies  regarding the future and NSC
intends that such forward-looking  statements be subject to safe harbors created

                                       5
<PAGE>
thereby. Wherever possible, we have identified these forward-looking  statements
by words such as "believes,"  "anticipates,"  "expects" or "intends" and similar
language.

All   forward-looking   statements  included  in  this  document  are  based  on
information  available  to us on the date of this  document  and NSC  assumes no
obligation to update any such forward-looking statements. Our actual results may
differ  materially  as a result of certain  factors,  including  those set forth
hereafter  and elsewhere in this  Registration  Statement.  Potential  investors
should consider  carefully the following  factors,  as well as the more detailed
information contained elsewhere in this Registration Statement,  before making a
decision to invest in the common stock of NSC.

LIMITED OPERATING HISTORY; ACCUMULATED DEFICIT; NEED FOR ADDITIONAL CAPITAL

There is limited historical  financial  information about NSC upon which to base
an evaluation of our  performance or to make a decision  regarding an investment
in shares of its  common  stock.  NSC has a  shareholders'  deficit  of  $72,922
through  September 30, 1999 and expects to incur a loss for the first six months
of 1999/00.  Cash and equivalents  balance at September 30, 1999 was $62,185 and
our use of cash in  operations  was  $327,000 for the year ended  September  30,
1999.

We commenced marketing efforts in August 1999, but we don't know if our products
and  processes  will achieve  significant  levels of marketing  acceptance.  Our
business is subject to all of the problems,  expenses, delays and risks inherent
in the  establishment  of a new business  enterprise  including  limited capital
resources,  possible delays in product development,  uncertain market acceptance
and the  absence  of  operating  history.  Therefore,  we  aren't  sure that our
business or  products/processes  will be  successful  or that we will be able to
achieve  or  maintain  profitable   operations.   We  may  encounter  unforeseen
difficulties   that  may  deplete  our  capital   resources  more  rapidly  than
anticipated.

We will likely be  required  to make  significant  investments  in research  and
development  and spend  additional  money to maintain  and expand our  marketing
efforts.  We may seek  additional  equity  financing  to provide  the  necessary
capital for these efforts. The timing and amount of any capital requirements can
not be  predicted  at this  time.  We can't be sure that any  financing  will be
available on acceptable  terms, if at all. If such financing is not available on
satisfactory  terms,  we may be  unable  to  continue,  develop  or  expand  our
business, develop new products or penetrate existing markets at the rate desired
and our operating  results may be adversely  affected.  Equity  financing  could
result in  additional  dilution to existing  shareholders.  See  "LIQUIDITY  AND
CAPITAL RESOURCES."

MARKET RISKS OF A NEW BUSINESS

We  have  formulated  our  business  plans  and  strategies   based  on  certain
assumptions  regarding the timely marketability of our products and processes to
potential licensing partners.  These assumptions are based on the best estimates
of NSC's management.  Our assessments regarding potential licensing partners may
be  incorrect.  Any  future  success of NSC may depend  upon  factors  including
changes in the  direction  of  technologies  we are  involved  in,  governmental

                                       6
<PAGE>
regulation,  increased levels of competition within the technology fields we are
attempting to penetrate, licensing agreements offered by competing technologies,
changes in general economic  conditions,  increases in operating costs including
costs of consultants, lab and testing facility fees, supplies and equipment.

RELIANCE ON LIMITED NUMBER OF PRODUCTS

All of our  products  are based on  applications  in the  electronics  industry.
Although the applications vary from product to product,  a decline in the market
demand for our products as well as the products of other companies utilizing our
products could have a significant adverse impact on NSC.

DEPENDENCE ON MARKETING EFFORTS

We are dependent on our ability to market our products to manufacturers that can
use our  technologies to their benefit.  We must increase the level of awareness
of our products to firms that spend  considerably more money than we do on their
own on-going research and development. We will be required to devote substantial
management and financial resources to our marketing efforts and we don't know if
these efforts will be successful.

DEPENDENCE ON KEY EMPLOYEES

We believe that our success will depend to a significant extent upon the efforts
and abilities of a small group of executive,  technical and marketing  personnel
and in particular on Lou Ross,  Chairman and CEO, Drs.  El-Sharawy  and Hashemi,
technical  consultants for NSC. The loss of the services of one or more of these
key personnel  could have a material  adverse effect on our business,  financial
condition and results of operations. In addition, our future success will depend
on our  ability to  continue  to  attract  and retain  qualified  technical  and
management personnel.

PATENTS, LICENSES AND INTELLECTUAL PROPERTY CLAIMS

Our success  depends,  in part, on our ability to obtain  patents,  licenses and
other intellectual property rights for our products and technology.  We have two
provisional U.S. patent  applications  pending,  one U.S. patent issued June 15,
1999  (5,912,481),  one Notice of Allowance  issued  September 7, 1999,  another
Notice of Allowance issued September 29, 1999 and five Patent Cooperation Treaty
international   patent   applications  filed.  The  process  of  seeking  patent
protection  is long and  expensive  and we can't be sure  that  patents  will be
issued,  that  we will be able to  adequately  protect  our  technology  or that
competition will not be able to develop similar technology. We believe the basis
on which we filed our  currently  pending  patent  applications  is  reasonable;
however,  we can't be sure that any patent  applications  filed  will  result in
issued  patents  or  that we will be  able  to  pursue  each  particular  patent
application claim to issuance.

There  are  no  pending  claims  or  lawsuits  against  NSC  regarding  possible
infringement  claims.  Although we don't  believe that we have  infringed on any
patented  technology,   any  successful   infringement  claim  would  materially
adversely affect our business, financial condition and results of operations. In

                                       7
<PAGE>
the future,  litigation  may be  necessary to enforce  patents  issued to us, to
protect  trade secrets or know-how  owned by us or to defend us against  claimed
infringement  of the rights of others and to determine the scope and validity of
the proprietary rights of others.

Any litigation  could result in substantial  cost and diversion of effort by us,
which  could have a  material  adverse  effect on our  financial  condition  and
operating  results.  Adverse  determinations  in any litigation  could result in
NSC's loss of proprietary rights, subject us to significant liabilities to third
parties,  require  us to seek  licenses  from  third  parties or prevent us from
marketing our products, any of which could have a material adverse effect on our
financial condition and results of operations.  We don't know if a license under
a  third  party's  intellectual  property  rights  will  be  available  to us on
reasonable terms, if at all.

YEAR 2000

Many currently  installed  computer  systems and software  products are coded to
accept only  two-digit  entries in the date field.  Beginning  in the year 2000,
these  date code  fields  will need to accept  four  digits  entries in order to
distinguish   21st  century  dates.  We  are  not  aware  of  any  situation  of
noncompliance that would materially adversely effect our operations or financial
condition.  We can't be sure,  however,  that instances of  noncompliance  which
could have a material  adverse effect on our  operations or financial  condition
have not been  identified.  Additionally,  we can't be sure that the  systems of
other  companies  with which we transact  business will be corrected on a timely
basis,  or that  failure by such  third  party  entities  to correct a Year 2000
problem,  or a correction  which is incompatible  with our information  systems,
would  not  have a  material  adverse  effect  on our  operations  or  financial
condition.

THIN MARKET; POSSIBLE VOLATILITY OF STOCK PRICE

NSC's common stock has been traded on the OTC  Electronic  Bulletin  Board since
December  1996  under  the  symbol  "NSCT".  We  believe  that  factors  such as
announcements  of  developments  related to our  business,  fluctuations  in our
quarterly or annual  operating  results,  failure to meet  securities  analysts'
expectations,  general  conditions in the marketplace and the worldwide economy,
announcements  of  technological  innovations  or  enhancements  by  us  or  our
competitors,  developments in patents or other intellectual  property rights and
developments  in our  relationships  with clients and suppliers  could cause the
price of our common stock to fluctuate, perhaps substantially.  In recent years,
the stock market has experienced  extreme price  fluctuations,  which have often
been  unrelated  to the  operating  performance  of  affected  companies.  These
fluctuations could adversely affect the market price of NSC's common stock.

SHARES ELEGIBLE FOR SALE

Sales of  substantial  numbers of shares of common  stock in the  public  market
could  adversely  affect the market price of our common stock. Of the 36,544,289
shares outstanding as of September 30, 1999, (i) approximately  6,983,524 shares
are eligible for resale in the public  markets  subject to compliance  with Rule
144 ("Rule l44")  promulgated  under the Securities Act of 1933, as amended (the
"1933 Act") and (ii)  approximately  579,000  shares are eligible for  immediate

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<PAGE>
sale in the public market as  unrestricted  shares or pursuant to Rule 144(k) of
the 1933 Act. In addition,  approximately  10,050,000 shares subject to warrants
(if  exercised)  would be eligible  for sale in the public  market one year from
date of issue pursuant to Rule 144.

In general,  under Rule 144 as currently in effect, any person (or persons whose
shares are aggregated for purposes of Rule 144) who beneficially owns restricted
securities  with respect to which at least one year has elapsed  since the later
of the date the shares were  acquired  from NSC or from an  affiliate of NSC, is
entitled to sell within any three-month  period a number of shares that does not
exceed the greater of 1% of the then outstanding  shares of common stock of NSC,
or, if the  common  stock is  quoted on a stock  exchange,  the  average  weekly
trading  volume in common stock during the four calendar  weeks  preceding  such
sale.

Sales under Rule 144 also are subject to certain  manner-of-sale  provisions and
notice  requirements and to the availability of current public information about
NSC.  A person who is not an  affiliate,  who has not been an  affiliate  within
three month prior to sale and who beneficially  owns restricted  securities with
respect to which at least two years have elapsed since the later of the date the
shares were  acquired  from NSC or from an affiliate of NSC, is entitled to sell
such shares under Rule 144(k) without regard to any of the volume limitations or
other requirements described above.

ITEM 2.  MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND
         RESULTS OF OPERATIONS

OVERVIEW

Since  we  changed  our  name  to  National   Scientific   Corporation  and  the
commencement  of  current  operations  in May  1996,  we have  been  engaged  in
extensive research and development  activities.  Our activities have resulted in
the issuance of one (1) U.S.  Patent,  two (2) Notices of Allowance  and two (2)
U.S. Patent applications pending. Our current activities include:

     *   Research, including clinical trials;
     *   Product development;
     *   Development of markets and distribution channels;
     *   Negotiation of strategic alliances;
     *   Patent applications;
     *   Raising capital;
     *   Development of corporate infrastructure and
     *   Initial operations (beginning in May 1996).

For a complete understanding of these activities,  this Management's  Discussion
and Analysis  should be read in  conjunction  with Part I. Item 1 Description of
Business and Part F/S-Financial Statements to this Form 10-SB.

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<PAGE>
RESULTS OF OPERATIONS

YEARS ENDED SEPTEMBER 30, 1998 AND 1999

No revenue was generated for the years ending September 30, 1998 and 1999.

Research and development expenditures decreased from $321,067 for the year ended
September  30, 1998,  to $130,463  for the current  year ended of September  30,
1999. A significant  portion of research and  development  costs are incurred in
bringing  products to the patent  application  stage. All five (5) of our patent
applications were filed in our fiscal 1998 year.

Costs and  expenses  declined  from  $741,401  to  $691,827  for the years ended
September  30, 1998 and 1999,  respectively.  We issued stock for a  significant
portion of our research and capital formation costs,  approximately  $370,000 in
fiscal 1998 and $350,000 in fiscal 1999,  in order to conserve  cash during both
years.

The interest expense for the most recent year end resulted from an accrual for a
note payable in the amount of $110,000, which is due in December 2000.

LIQUIDITY AND CAPITAL RESOURCES

We have not been  profitable and have had negative cash flow from our operations
due to our substantial  on-going  investment in research and development efforts
and  expenditures  to build the  appropriate  infrastructure  to support growth.
Consequently,  we have  been  dependent  on  private  placements  of our  equity
securities to fund our cash requirements.

NSC's private placement of March 15, 1998 was closed in July 1999,  resulting in
the issuance of 9,650,000  shares of common  stock  (after  conversion)  for net
proceeds of approximately  $482,500.  In connection with the private  placement,
NSC issued warrants to purchase an aggregate of 9,650,000 shares of common stock
(the "Warrants").  The exercise price of the Warrants,  which became exercisable
in March  1998 and expire in  December  2000,  is $1.00 per  share.  We have not
issued any shares of common stock from the exercise of the Warrants.

NSC's most recent private placement began in August 1999 and has resulted in the
issuance of 320,000  shares of common  stock for net  proceeds of  approximately
$80,000 through  September 30, 1999. In connection with this private  placement,
NSC issued  warrants to purchase an aggregate of 400,000  shares of common stock
(the "Warrants").  The exercise price of the Warrants,  which became exercisable
in August 1999 and expire in December  2001, is $1.50 per share.  Currently,  we
have not issued any shares of common  stock from the  exercise of the  Warrants.
The total  private  offering,  including  amendments  dated October 18, 1999 and
November  10,  1999,  is for  4,085,000  shares of common  stock,  plus  another
4,150,000 shares of common stock available by exercising the Warrants.

During the fiscal years ending  September 30, 1998 and 1999, we issued 3,487,557
and 3,165,000 shares,  respectively,  of our common stock to consultants in lieu
of cash compensation.  Also, during 1997-98 and 1998-99 fiscal years, we granted
334,000 and 270,000 options, respectively, to our consultants to purchase shares

                                       10
<PAGE>
of NSC's  common  stock.  Since the common stock  shares  available  under these
options are restricted under Rule 144, the options were issued at less than fair
market  value.  As of  September  30,  1998,  16,000  of the  options  have been
exercised  and the stock has been  issued.  As of September  30,  1999,  496,000
options have been  exercised and the stock has been issued.  As of September 30,
1999, 7,000 of the 1997-98 options remain open with no expiration  date;  85,000
of the 1998-99 options remain open with 85,000 expiring December 31, 1999.

Since  inception,  NSC has used its common  stock and stock  options to attract,
retain and compensate its employees and  consultants  and as collateral for debt
financing. It is our intent to limit the use of our common stock as compensation
in the future with the following exception. The Board of Directors has currently
authorized  management  to issue a maximum of 600,000  shares of common stock to
compensate  employees and/or  consultants for raising $300,000 under its current
private  offering that began in August 1999.  As of September 30, 1999,  none of
the 600,000 shares have become due or payable,  although a $15,000 liability has
been recorded at year end.

As of September 30, 1999,  our cash reserves  totaled  $62,185 and total current
assets were $62,185.  We have recently  begun  product  marketing  efforts after
several years of research and development and have not yet reached break-even in
terms of both cash flow and  profitability.  We  completed  our current  private
offering on December 30, 1999. With completion of this private offering, NSC, at
its current  operating  rate,  believes it will have sufficient cash reserves to
operate  through  September  30,  2000.  In  addition,  our long term debt as of
September 30, 1999 was $110,000, plus accrued interest from December 31, 1998 at
ten  percent  (10%) per year.  This  long  term debt  relates  to a note due and
payable on or before  December 31, 2000 and is secured by 500,000  shares of our
common stock held in trust.

ITEM 3.  DESCRIPTION OF PROPERTY

We currently  lease 575 square feet of office space at 4455 E.  Camelback  Road,
Suite E160,  Phoenix,  Arizona through a lease expiring  September 30, 2001 with
annual lease payments of $27,600.

We believe that our facilities are adequate for our needs through 2000.

                                       11
<PAGE>
ITEM 4. SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT

The  following  table lists  certain  information  as of September 30, 1999 (the
"Reference  Date") with respect to the  beneficial  ownership of common stock of
NSC, by each person known by NSC to own  beneficially  more than five percent of
NSC's common stock,  by each executive  officer and director and by all officers
and  directors as a group.  Unless  otherwise  indicated,  all persons have sole
voting and  investment  powers over such shares,  subject to community  property
laws. As of the Reference  Date,  there were  36,544,289  shares of common stock
outstanding.

NAME AND ADDRESS                     AMOUNT AND NATURE
OF BENEFICIAL OWNER (1)           OF BENEFICIAL OWNER (2)       PERCENT OF CLASS
- -----------------------           -----------------------       ----------------

L. Ross, Chairman of the Board,         2,996,440 (3)                 8.20%
   President, Director

Vernon M. Traylor, Corporate            1,750,000                     4.79%
   Secretary

- ----------
(1)  Except as  otherwise  noted,  the address  for each person is c/o  National
     Scientific  Corporation,  4455 E.  Camelback  Road,  Suite  E160,  Phoenix,
     Arizona 85018.

(2)  Unless  otherwise  noted,  NSC believes that all persons named in the table
     have sole voting and investment  power with respect to all shares of common
     stock  listed as  beneficially  owned by them. A person is deemed to be the
     beneficial  holder of securities that can be acquired by such person within
     60 days from the  Reference  Date upon the exercise of warrants or options.
     Each  beneficial  owner's  percentage  ownership is determined by including
     shares, underlying options of warrants which are exercisable by such person
     currently,  or within 60 days  following the  Reference  Date and excluding
     shares underlying options and warrants held by any other person.

(3)  Includes 1,670,000 shares owned by family members.

ITEM 5. DIRECTORS, EXECUTIVE OFFICERS, PROMOTERS AND CONTROL PERSONS

The directors, executive officers, significant employees and consultants of NSC,
their respective ages and positions with NSC are as follows:

     NAME                       AGE   POSITION
     ----                       ---   --------
     L. Ross                    71    President & CEO, Chairman of the Board,
                                        Director
     Vernon M. Traylor          51    Corporate Secretary
     Wendy S. Burton            37    Director of Corporate Communications
     Dr. El-Badawy El-Sharawy   41    Chief Technical Consultant
     Dr. Maid Hashemi           38    Technical Consultant

                                       12
<PAGE>
DIRECTORS, EXECUTIVE OFFICERS AND SIGNIFICANT ADVISORS

L. L. ROSS. Mr. Ross has served as Chairman of the Board and Director since 1996
and assumed  President & CEO duties in March 1998. Mr. Ross served as Chairman &
CEO of Intel Malaysia from 1970 to 1975. From 1976 to 1996, Mr. Ross served in a
technical  consulting  capacity  for various  electronics  manufacturing  firms,
including Labelab and Advanced Semiconductor Engineering.

VERNON M. TRAYLOR.  Mr. Traylor joined NSC in March 1998 as Corporate Secretary.
Prior to that, Mr. Traylor  served as  Vice-President/Treasurer  and Director of
Road  Machinery  Co. from 1970 to 1992.  From 1992 to joining NSC,  Mr.  Traylor
served in a financial  consulting  capacity with Valuation and Business Services
for various mid-size private and public firms in the Phoenix area.

WENDY S.  BURTON.  Ms.  Burton  joined NSC in May 1998 as Director of  Corporate
Communications.  From 1992 to 1998,  Ms. Burton was in the  investors  relations
field with various  companies with duties ranging from initial public offerings,
private placements and seed capital ventures.

EL-BADAWY EL-SHARAWY, Ph.D. Dr. El-Sharawy has been with NSC since its inception
in 1996 as its Chief Technical  Advisor.  He has been an Assistant  Professor of
Electrical  Engineering since 1989 at a major Arizona university.  His expertise
includes,  but is not limited to:  microwave  circuits,  anistropic  devices and
applied  electromagnetics.  He is a senior  member of IEEE and is a recipient of
the 1980 Egyptian Engineering Syndicate Medal of Honor.

MAJID M. HASHEMI,  Ph.D. Dr.  Hashemi has been a Technical  Advisor to NSC since
its inception in 1996. He is currently the principal design engineer for a major
international  semiconductor  firm located in Silicon  Valley and has been since
1995. Prior to that, he was with Motorola from 1993 to 1995.

BOARD OF DIRECTORS

The Board of Directors  consisted of three members until February 1998, at which
time Marc  Messina and  Michelle  Neild  resigned.  L. L. Ross has been the sole
Director and Chairman of the Board of NSC since February 1998.

DIRECTOR COMPENSATION

NSC has not adopted any compensation plan for Directors.

                                       13
<PAGE>
ITEM 6. EXECUTIVE COMPENSATION

The following table lists the total compensation for the Chief Executive Officer
and Corporate Secretary,  whose total salary and non-cash  compensation exceeded
$100,000 for fiscal 1997, 1998 and 1999.

                           SUMMARY COMPENSATION TABLE

                                ANNUAL COMPENSATION
       NAME AND           -------------------------------    OTHER ANNUAL
  PRINCIPAL POSITION      YEAR    SALARY        BONUS        COMPENSATION
  ------------------      ----    ------        -----        ------------
L.L. Ross                 1999    $14,600       $  -0-      $       -0-
Chairman of the Board,    1998    $ 2,500       $  -0-      $       -0-
CEO and President         1997    $   -0-       $  -0-      $2,612,500(1)

Vernon M. Traylor         1999    $68,700       $  -0-      $  240,000(1)
Corporate Secretary       1998    $22,500       $  -0-      $   55,000(1)

- ----------
(1)  Stock in lieu of cash compensation

STOCK OPTION PLANS FOR EXECUTIVES

There are no stock option plans for  executives  in place as of the date of this
report.

COMPENSATION/EMPLOYMENT AGREEMENTS

There are no compensation or employment  agreements in place for executives with
the   exception  of  the   following.   Lou  Ross  will  receive  the  following
compensation:  (1) Four percent (4%) of all future gross revenues generated from
NSC's products and/or intellectual property will be paid as compensation and (2)
Effective September 1, 1999, Mr. Ross will receive $7,000 per month,  subject to
cash availability.

ITEM 7. CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS

Mr. Lou Ross' family members provided  unrestricted  common stock of NSC as part
of NSC's  private  offering in August  1999.  In exchange for doing so, Mr. Ross
received the two (2) compensation provisions outlined in COMPENSATION/EMPLOYMENT
AGREEMENTS  that can be reviewed in ITEM 6. In addition,  Mr. Ross received 1.88
shares of NSC  common  restricted  stock  for each  share of his  family's  free
trading stock.

                                       14
<PAGE>
ITEM 8. DESCRIPTION OF SECURITIES

The  following  summary  is  a  description  of  certain   provisions  of  NSC's
Certificate  of  Incorporation  and Bylaws.  This summary does not purport to be
complete  and is subject to, and is  qualified  in its  entirety  by, all of the
provisions  of the  Certificate  of  Incorporation  and  Bylaws,  including  the
definitions therein of certain terms. Copies of the Certificate of Incorporation
and Bylaws are filed as an exhibit to the Registration Statement.

COMMON STOCK

In accordance with NSC's  Certificate of  Incorporation,  the Board of Directors
has authority to issue up to 80,000,000  shares of common stock, par value $0.01
per share.  As of September  30, 1999,  there were  36,544,289  shares of common
stock  outstanding  and 401  holders of record of common  stock.  Each holder of
common  stock  is  entitled  to one vote for  each  share  held on all  matters.
Cumulative voting in elections of directors and all other matters brought before
stockholder   meetings  is  not   provided  for  under  NSC's   Certificate   of
Incorporation or Bylaws.

The holders of common stock will be entitled to receive such dividends,  if any,
as may be  declared  by the  board  from time to time out of  legally  available
funds, subject to any preferential  dividend rights of any outstanding shares of
Preferred  Stock.  Upon the  liquidation,  dissolution or winding up of NSC, the
holders of common  stock will be entitled to share  ratably in all assets of NSC
that are legally available for distribution, after payment of all debt and other
liabilities  and  distribution in full of  preferential  amounts,  if any, to be
distributed to holders of Preferred Stock.

The  holders  of common  stock are not  entitled  to  preemptive,  subscription,
redemption or  conversion  rights.  The rights,  preferences  and  privileges of
holders of common  stock are subject to, and may be  adversely  affected by, the
rights of any series of Preferred Stock which NSC may designate and issue in the
future.

PREFERRED STOCK

In accordance with NSC's  Certificate of  Incorporation,  the Board of Directors
has the authority,  without further action by the  stockholders,  to issue up to
4,000,000 shares of $0.10 par value Preferred Stock in one or more series and to
fix the designations,  powers, preferences and relative participating,  optional
or special rights and the qualifications,  limitations or restrictions  thereof,
including dividend rights, conversion rights, voting rights, terms of redemption
and liquidation preferences,  any or all of which may be greater than the rights
of the common stock.

The Board of Directors,  without stockholder approval, can issue Preferred Stock
with voting,  conversion or other rights that could adversely  affect the voting
power and other  rights of the holders of common  stock.  Preferred  Stock could
thus be issued  quickly  with terms  calculated  to delay or prevent a change in
control of NSC or make removal of management more difficult.  Additionally,  the
issuance of Preferred  Stock may have the effect of decreasing  the market price
of the common stock and may adversely  affect the voting and other rights of the
holders of common stock.  Currently,  there are no issued and outstanding shares
of Preferred stock.

                                       15
<PAGE>
TRANSFER AGENT AND REGISTRAR

Corporate  Stock Transfer has been appointed as the transfer agent and registrar
for NSC's common stock. They are located at 3200 Cherry Creek Drive South, #430,
Denver, CO 80209.

ANTI-TAKEOVER EFFECTS OF PROVISIONS OF THE ARTICLES OF INCORPORATION AND BYLAWS

There are no Anti-Takeover provisions in the Articles of Incorporation or Bylaws
of NSC.

                                     PART II

ITEM 1. MARKET PRICE OF AND DIVIDENDS ON THE  COMPANY'S  COMMON EQUITY AND OTHER
SHAREHOLDER MATTERS

The  principal  United  States market for NSC's common stock is the OTC Bulletin
Board. The following is the high and low bid information for our common stock:

COMMON STOCK                                              HIGH           LOW
                                                          ----           ---
1999
  First Quarter (through March 31, 1999)               $  0.34          $ 0.10
  Second Quarter (through June 30, 1999)               $  0.26          $0.125
  Third Quarter (through September 30, 1999)           $  0.28          $ 0.16

1998
  First Quarter (through March 31, 1998)               $0.3125          $ 0.06
  Second Quarter (through June 30, 1998)               $  0.36          $ 0.08
  Third Quarter (through September 30, 1998)           $  0.20          $ 0.08
  Fourth Quarter (through December 31, 1998)           $  0.24          $ 0.10

1997
  First Quarter (through March 31, 1997)               $1.5625          $ 1.00
  Second Quarter (through June 30, 1997)               $1.1875          $ 0.50
  Third Quarter (through September 30, 1997)           $0.6875          $ 0.27
  Fourth Quarter (through December 31, 1997)           $ 0.625          $ 0.24

There are  approximately  401  holders  of record  of NSC's  common  stock as of
September 30, 1999.

SHARES ELIGIBLE FOR SALE

Sales of  substantial  numbers of shares of common  stock in the  public  market
could adversely affect the market price of NSC's common stock. Of the 36,544,289
shares outstanding as of September 30, 1999, (i) approximately  6,983,524 shares
are eligible for resale in the public  markets  subject to compliance  with Rule
144 ("Rule 144")  promulgated  under the Securities Act of 1933, as amended (the
"1933 Act") and (ii)  approximately  579,000  shares are eligible for  immediate
sale in the public market as  unrestricted  shares or pursuant to Rule 144(k) of
the 1933 Act. In addition,  approximately  10,050,000 shares subject to warrants

                                       16
<PAGE>
(if  exercised)  would be eligible  for sale in the public  market one year from
date of issue pursuant to Rule 144.

In general,  under Rule 144 as currently in effect, any person (or persons whose
shares are aggregated for purposes of Rule 144) who beneficially owns restricted
securities  with respect to which at least one year has elapsed  since the later
of the date the shares were  acquired  from NSC or from an  affiliate of NSC, is
entitled to sell within any three-month  period a number of shares that does not
exceed the greater of 1% of the then outstanding  shares of common stock of NSC,
or, if the  common  stock is  quoted on a stock  exchange,  the  average  weekly
trading  volume in common stock during the four calendar  weeks  preceding  such
sale.

Sales under Rule 144 also are subject to certain  manner-of-sale  provisions and
notice required and to the availability of current public information about NSC.
A person who is not an  affiliate,  who has not been an  affiliate  within three
months  prior to sale  and who  beneficially  owns  restricted  securities  with
respect to which at least two years have elapsed since the later of the date the
shares were  acquired  from NSC or from an affiliate of NSC, is entitled to sell
such shares under Rule 144(k) without regard to any of the volume limitations or
other requirements described above.

DIVIDENDS

NSC has not paid, nor declared,  any dividends  since its inception and does not
intend to declare any such dividends in the foreseeable future.

ITEM 2. LEGAL PROCEEDINGS

NSC is not involved in any pending legal  proceedings to which we are a party or
of which any of our property is subject.

ITEM 3. CHANGES IN AND DISAGREEMENTS WITH ACCOUNTANTS

There were no  disagreements  between  NSC and Hurley & Company on any matter of
accounting  principles or practices,  financial statement disclosure or auditing
scope or procedures, which disagreements, if not resolved to the satisfaction of
Hurley & Company,  would have caused it to make  reference to the subject matter
of the disagreements in connection with its report.

ITEM 4. RECENT SALES OF UNREGISTERED SECURITIES

During the period January 15, 1997, through September 30, 1997, NSC sold 885,447
shares  of common  stock  for total  consideration  of  $820,117  to  accredited
investors  as defined by Rule  501(a) of  Regulation  D. The shares were sold in
reliance on the exemption  provided by Sections 4(2) and 4(6) of the  Securities
Act of 1933 and Rule 506 of Regulation D.

During the period  March 15, 1998  through  July 31,  1999,  NSC sold  9,650,000
shares of common stock (after conversion) for total consideration of $482,500 to
accredited  investors as defined by Rule 501(a) of Regulation D. The shares were
sold in reliance  on the  exemption  provided  by Sections  4(2) and 4(6) of the
Securities Act of 1933 and Rule 506 of Regulation D.

                                       17
<PAGE>
During the period August 1, 1999,  through  September 30, 1999, NSC sold 320,000
shares of common stock (after conversion) for total  consideration of $80,000 to
accredited  investors as defined by Rule 501(a) of Regulation D. Since September
30, 1999, we have sold an additional  3,690,000 shares of common stock for total
consideration  of $720,000 to accredited  investors as defined by Rule 501(a) of
Regulation  D. The shares  were sold in reliance  on the  exemption  provided by
Sections 4(2) and 4(6) of the  Securities Act of 1933 and Rule 506 of Regulation
D.

ITEM 5.  INDEMNIFICATION OF DIRECTORS AND OFFICERS

There are no provisions for  indemnification  of directors and officers in NSC's
Bylaws or Articles of Incorporation.

                                       18
<PAGE>
                                    PART F/S

                         NATIONAL SCIENTIFIC CORPORATION
                          INDEX TO FINANCIAL STATEMENTS

Report of Independent Accountants                                            F-2

Consolidated Balance Sheets as of September 30, 1998 and 1999                F-3

Consolidated Statement of Operations for the years ended
September 30, 1998 and 1999                                                  F-4

Consolidated Statements of Shareholders' Equity (Deficit)
for the years ended September 30, 1998 and 1999                              F-5

Consolidated Statements of Cash Flow for the years ended
September 30, 1998 and 1999                                                  F-7

Notes to Consolidated Financial Statements                                   F-9

                                       F-1
<PAGE>
                    REPORT OF INDEPENDENT PUBLIC ACCOUNTANTS


Board of Directors
National Scientific Corporation

We  have  audited  the  accompanying   balance  sheets  of  National  Scientific
Corporation (a development  stage Company) as of September 30, 1999 and 1998 and
the related  statements of operations,  shareholders'  equity (deficit) and cash
flows for each of the two years in the period ended  September  30, 1999.  These
financial  statements are the  responsibility of the Company's  management.  Our
responsibility  is to express an opinion on these financial  statements based on
our audits.

We  conducted  our  audits  in  accordance  with  generally   accepted  auditing
standards.  Those standards require that we plan and perform the audit to obtain
reasonable  assurance  about  whether  the  financial  statements  are free from
material  misstatement.  An audit includes examining,  on a test basis, evidence
supporting  the amounts and  disclosures in the financial  statements.  An audit
also includes assessing the accounting principles used and significant estimates
made by  management,  as well as  evaluating  the  overall  financial  statement
presentation.  We believe  that our audits  provide a  reasonable  basis for our
opinion.

In our  opinion,  such  financial  statements  present  fairly,  in all material
respects, the financial position of National Scientific Corporation at September
30, 1999 and 1998 and the results of  operations  and cash flows for each of the
two years in the period ended  September 30, 1999 in conformity  with  generally
accepted accounting principles.

The  accompanying  financial  statements  have been  prepared  assuming that the
Company  will  continue  as a  going  concern.  As  discussed  in  note 2 to the
financial  statements,  the  Company is in the  development  stage,  has not yet
generated  significant  revenues  and is  dependent  upon  raising  capital from
investors.  As discussed in note 2, the Company was able to raise a  significant
amount of cash from the sale of stock subsequent to year end, however,  there is
no assurance  that the funds will be sufficient  to meet the  Company's  working
capital   requirements   until  the  Company's  products  are  accepted  by  the
marketplace.



                                                 /s/ Hurley & Company

Granada Hills, CA
December 7, 1999

                                       F-2
<PAGE>
                         NATIONAL SCIENTIFIC CORPORATION
                          (A Development Stage Company)

                                 BALANCE SHEETS
                           September 30, 1999 and 1998


                                     ASSETS
                                                         1999           1998
                                                      -----------    ----------
Current Assets:
 Cash and Cash Equivalents                            $    62,185    $   21,735
 Due From Sale of Subsidiary                                   --        12,500
                                                      -----------    ----------
     Total Current Assets                                  62,185        34,235
                                                      -----------    ----------
Property and Equipment, net                                 3,340         4,676
                                                      -----------    ----------

     Total Assets                                     $    65,525    $   38,911
                                                      ===========    ==========

                 LIABILITIES AND SHAREHOLDERS' EQUITY (DEFICIT)

Current Liabilities:
 Accounts Payable and Accrued Expenses                $    19,917    $   17,827
 Accrued Interest                                           8,530            --
                                                      -----------    ----------
     Total Current Liabilities                             28,447        17,827
                                                      -----------    ----------
Long Term Note Payable                                    110,000       110,000
                                                      -----------    ----------
Commitments, Contingencies and Subsequent
 Events (See Notes)

Shareholders' Equity (Deficit):
 Preferred Stock, $.10 par value; 4,000,000
  Shares Authorized 15,000 Shares Issued and
  Outstanding at September 30, 1998                            --         1,500
 Common Stock, par value $.01; 80,000,000
  Shares Authorized, 36,544,289 and 25,331,849
  Shares Issued and Outstanding at September 30, 1999
  and 1998, Respectively                                  365,443       253,318
 Additional Paid-in-Capital                             3,432,945     2,823,491
 Deficit Accumulated During the Development Stage      (1,471,630)     (772,545)
 Accumulated Deficit                                   (2,394,680)   (2,394,680)
 Receivable for Return of Stock                            (5,000)           --
                                                      -----------    ----------
     Total Shareholders' Equity                           (72,922)      (88,916)
                                                      -----------    ----------

Total Liabilities and Shareholders' Equity            $    65,525    $   38,911
                                                      ===========    ==========

                 See accompanying notes to financial statements

                                       F-3
<PAGE>
                         NATIONAL SCIENTIFIC CORPORATION
                          (A Development Stage Company)

                            STATEMENTS OF OPERATIONS
                 For the Years Ended September 30, 1999 and 1998

                                                         1999           1998
                                                       ---------      --------

Revenues                                               $      --      $      --
                                                       ---------      ---------
Costs and Expenses
 Consulting Fees, Related Party                          455,050         75,725
 Salaries and Benefits                                        --         73,706
 Research and Development                                130,463        321,067
 Stock Compensation                                       40,916         64,040
 Other                                                    65,398        206,863
                                                       ---------      ---------
     Total Costs and Expenses                          $ 691,827      $ 741,401
                                                       ---------      ---------

Net Loss From Operations                                (691,827)      (741,401)
                                                       ---------      ---------
Other Income (Expense)
 Interest and Other Income                                 1,280             --
 Interest Expense                                         (8,538)        (2,589)
 Loss on Disposal of Assets                                   --        (28,555)
                                                       ---------      ---------
                                                          (7,258)       (31,144)
                                                       ---------      ---------
Net Loss Before Income Tax Benefit                      (699,085)      (772,545)
Provision for Income Taxes (Benefit)                          --             --
                                                       ---------      ---------

Net Loss                                               $(699,085)      (772,545)
                                                       =========      =========

Net Loss Per Common Share, Basic and Diluted           $   (0.02)     $   (0.04)
                                                       =========      =========

                 See accompanying notes to financial statements

                                       F-4
<PAGE>
                         NATIONAL SCIENTIFIC CORPORATION
                          (A Development Stage Company)

             STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY (DEFICIT)
                 For the Years Ended September 30, 1999 and 1998


<TABLE>
<CAPTION>
                                   Common Stock         Preferred Stock
                                -------------------   ------------------  Additional                Development
                                Number of             Number of            Paid-In    Accumulated      Stage
                                 Shares      Amount    Shares    Amount    Capital      Deficit       Deficit    Total
                                 ------      ------    ------    ------    -------      -------       -------    -----
<S>                            <C>           <C>       <C>        <C>     <C>          <C>           <C>         <C>
Balance September 30, 1997     17,847,292   $178,473       --        --   2,160,780    (2,394,680)        --     (55,427)

Stock issued for services       3,487,557     34,875       --        --     335,473            --         --     370,348

Private placement of
 preferred stock                       --         --   49,500     4,950     242,550            --         --     247,500

Exercise of warrants and
 options                          547,000      5,470       --        --     100,888            --         --     106,358

Conversion of preferred
 to common stock                3,450,000     34,500  (34,500)   (3,450)    (31,050)           --         --          --

Contributed capital                    --         --       --        --      14,850            --         --      14,850

Net loss                               --         --       --        --          --            --   (772,545)   (772,545)
                               ----------    -------   ------     -----   ---------    ----------   --------    --------
Balance, September 30, 1998    25,331,849    253,318   15,000     1,500   2,823,491    (2,394,680)  (772,545)    (88,916)
                               ==========    =======   ======     =====   =========    ==========   ========    ========

</TABLE>

                 See accompanying notes to financial statements

                                       F-5
<PAGE>
                         NATIONAL SCIENTIFIC CORPORATION
                          (A Development Stage Company)

       STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY (DEFICIT), CONTINUED
                 For the Years Ended September 30, 1999 and 1998

<TABLE>
<CAPTION>
                                  Common Stock        Preferred Stock
                              -------------------   ------------------   Additional                Development
                              Number of              Number of            Paid-In    Accumulated     Stage
                               Shares      Amount     Shares    Amount    Capital      Deficit      Deficit       Total
                               ------      ------     ------    ------    -------      -------      -------       -----
<S>                          <C>          <C>        <C>        <C>      <C>        <C>           <C>          <C>
Balance, September 30, 1998  25,331,849    253,318     15,000    1,500   2,823,491   (2,394,680)     (772,545)    683,629

Stock issued for services     3,165,000     31,650         --       --     315,979           --            --     347,629

Preferred stock offering             --         --     47,000    4,700     230,300           --            --     235,000

Exercise of warrants and
 options                        496,000      4,960         --       --      27,490           --            --      32,450

Private placement of
 common stock                   400,000      4,000         --       --      96,000           --            --     100,000

Conversion of preferred to
 common stock                 6,200,000     62,000    (62,000)  (6,200)    (55,800)          --            --          --

Common stock issued to
 collateralize loan             500,000      5,000         --       --          --           --            --       5,000

Stock converted by
 director's family
 member                         451,440      4,515         --       --      (4,515)          --            --          --

Net loss                             --         --         --       --          --           --      (699,085)   (699,085)
                             ----------   --------    -------   ------  ----------   ----------    ----------    --------

Balance, September 30, 1999  36,544,289   $365,443         --       --   3,432,945   (2,394,680)   (1,471,630)    (67,922)
                             ==========   ========    =======   ======  ==========   ==========    ==========    ========
Receivable for return
 of stock                                                                                                          (5,000)
                                                                                                                 --------
                                                                                                                  (72,922)
                                                                                                                 ========
</TABLE>
                 See accompanying notes to financial statements

                                       F-6
<PAGE>
                         NATIONAL SCIENTIFIC CORPORATION
                          (A Development Stage Company)

                            STATEMENTS OF CASH FLOWS
                 For the Years Ended September 30, 1999 and 1998

                                                        1999             1998
                                                      ---------        --------
Cash flows from operating activities:
  Net loss                                            $(699,085)      $(772,545)
  Adjustments to reconcile net loss to net
   cash used in operating activities:
   Depreciation                                           1,336           6,891
   Loss on disposal of assets                                --          28,555
   Stock issued for services                            347,629         370,348
   Decrease in receivables                               12,500          17,500
   Decrease in prepaid expenses and deposits                 --          10,571
   Increase (decrease) in accounts payable
    and accrued expenses                                  2,090          (4,752)
   Increase in accrued interest                           8,530              --
                                                       ---------       ---------

      Net cash used in operating activities            (327,000)       (343,432)
                                                      ---------       ---------
Cash flows from investing activities:
  Proceeds from the sale of furniture and equipment          --           4,660
                                                      ---------       ---------
Cash flows from financing activities:
  Repayment of shareholder loans                             --         (10,000)
  Repayment of capital lease obligations                     --          (1,819)
  Proceeds from the issuance of preferred stock         235,000         247,500
  Proceeds from issuance of common stock                132,450         121,208
                                                      ---------       ---------

      Net cash provided by financing activities         367,450         356,889
                                                      ---------       ---------

Net increase in cash and cash equivalents                40,450          18,117
Cash and cash equivalents, beginning of year             21,735           3,618
                                                      ---------       ---------

Cash and cash equivalents, end of year                $  62,185       $  21,735
                                                      =========       =========

                 See accompanying notes to financial statements

                                       F-7
<PAGE>
                         NATIONAL SCIENTIFIC CORPORATION
                          (A Development Stage Company)
                            Statements of Cash Flows
                 For the Years Ended September 30, 1999 and 1998


SUPPLEMENTARY DISCLOSURE OF CASH FLOW INFORMATION

                                                              1999        1998
                                                             ------      ------
Cash paid during the year for interest                       $    8      $2,589
                                                             ======      ======

Cash paid during the year for income taxes                   $   --      $   --
                                                             ======      ======

SUMMARY OF NON-CASH INVESTING AND FINANCING ACTIVITIES

     During 1999, the Company  issued 451,440 shares of restricted  common stock
     to  a  Director's   family  member  in  exchange  for  320,000   shares  of
     unrestricted common stock.

     During  1998,  the  Company  sold  equipment  for $4,660 in cash,  with the
     purchaser assuming $9,252 in lease obligations.

                 See accompanying notes to financial statements

                                       F-8
<PAGE>
                         NATIONAL SCIENTIFIC CORPORATION
                          (A Development Stage Company)

                          NOTES TO FINANCIAL STATEMENTS
                           September 30, 1999 and 1998


1.   SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

     The following is a summary of the significant  accounting policies followed
     by National  Scientific  Corporation  (The  Company or NSC).  The  policies
     conform  with  generally  accepted  accounting  principles,  which  require
     management  to make  estimates  and  assumptions  that affect the  reported
     amounts of assets and liabilities  and disclosure of contingent  assets and
     liabilities  at the  date of the  financial  statements  and  the  reported
     amounts of  revenues  and  expenses  during the  reporting  period.  Actual
     results could differ from those estimates.

     a.   OPERATIONS

          The  Company  was  incorporated  in Texas on June 22, 1953 as American
          Mortgage Co. On May 16, 1996, the Company changed its name to National
          Scientific  Corporation  (NSC).  During 1996, the Company acquired the
          operations of Eden Systems,  Inc. as a wholly-owned  subsidiary.  Eden
          was engaged in water treatment and the retailing of cleaning products.
          Eden's operations were sold on September 30, 1997. As such, management
          now considers NSC to be in the development  stage. Since September 30,
          1997,  the  Company  has  engaged  its  efforts  in the  research  and
          development of semiconductor  proprietary technology and processes and
          in raising capital to fund its operations and research.

     b.   CASH EQUIVALENTS

          Cash  equivalents  include money market accounts and other  short-term
          investments with an original maturity of three months or less.

     c.   PROPERTY AND EQUIPMENT

          Property and equipment are recorded at cost and are being  depreciated
          over  estimated  useful  lives of five years  using the  straight-line
          method.

     d.   ADVERTISING AND MARKETING COSTS

          Advertising  and marketing  costs,  which  totaled  $3,476 in 1999 and
          $29,639 in 1998 are expensed as incurred.

     e.   STOCK OPTIONS

          The Company has elected to follow Accounting  Principles Board Opinion
          No.  25,  "Accounting  for Stock  Issued  to  Employees"  and  related
          interpretations  in accounting for its employee  stock options.  Under
          APB 25, no compensation expense is recorded when the exercise price of
          the option equals the market price of the underlying stock on the date
          of the grant.  The Company has adopted the disclosure  only provisions
          of Statement of Financial  Accounting  Standards No. 123,  "Accounting
          for Stock Based Compensation".

                                       F-9
<PAGE>
                         NATIONAL SCIENTIFIC CORPORATION
                          (A Development Stage Company)

                    NOTES TO FINANCIAL STATEMENTS, CONTINUED
                           September 30, 1999 and 1998

1.   SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES, CONTINUED

     f.   INCOME TAXES

          Income taxes are accounted  for under the asset and liability  method.
          Deferred tax assets and  liabilities are recognized for the future tax
          consequences   attributable  to  differences   between  the  financial
          statement carrying amount of existing assets and liabilities and their
          respective  tax  bases,   including  operating  loss  and  tax  credit
          carryforwards.  Deferred tax assets and liabilities are measured using
          enacted tax rates  expected to apply to taxable income in the years in
          which those  temporary  differences  are  expected to be  recovered or
          settled. The effect in deferred tax assets and liabilities of a change
          in tax rates is  recognized  in income in the period that includes the
          enactment date. Valuation allowances are established when necessary to
          reduce deferred tax assets to the amount expected to be realized.

     g.   RESEARCH AND DEVELOPMENT / PATENTS

          Both research and development and the costs  associated with obtaining
          patents  have been  expensed as incurred.  Patent costs are  expensed,
          since the Company has  not yet  developed  products  which have gained
          market acceptance.

     h.   NET LOSS PER SHARE

          Net loss per share is computed by dividing  the loss  attributable  to
          common   shareholders  by  the  weighted   average  number  of  shares
          outstanding during the period,  which was assumed to be 31,111,746 and
          21,105,854   for  the  years  ended   September  30,  1999  and  1998,
          respectively.  Stock options and warrants are considered  antidilutive
          and were not considered in the calculation.

2.   OPERATIONS

     The Company experienced  significant operating losses during 1999 and 1998.
     Of the total net losses of $699,085 and  $772,545,  approximately  $350,000
     and  $370,000  related  to stock  issued  for  services  in 1999 and  1998,
     respectively.

     Subsequent to September 30, 1999, the Company raised an additional $720,000
     from a private  placement of common  stock.  Management  believes  that the
     additional capital will be adequate to fund operations and research for the
     next fiscal year, until the Company can generate revenues.  However,  there
     can be no assurance that these actions will be successful.  These financial
     statements  do not  include  any  adjustments  that might  result  from the
     outcome of this uncertainty.

                                      F-10
<PAGE>
                         NATIONAL SCIENTIFIC CORPORATION
                          (A Development Stage Company)

                    NOTES TO FINANCIAL STATEMENTS, CONTINUED
                           September 30, 1999 and 1998


3.   PROPERTY AND EQUIPMENT

     Property and equipment  consists of the following at September 30, 1999 and
     1998:

                                                       1999           1998
                                                     --------       --------

          Computer equipment                         $  3,057       $  3,057
          Office furniture                              3,623          3,623
                                                     --------       --------
                                                        6,680          6,680
          Less: accumulated depreciation                3,340          2,004
                                                     --------       --------
                                                     $  3,340       $  4,676
                                                     ========       ========

4.   LONG-TERM NOTE PAYABLE

     In February  1999,  the  Company  issued a $110,000  promissory  note to an
     individual,  who had  previously  loaned money to Eden Systems,  Inc.,  the
     Company's  former  subsidiary.  The  loan  bears  interest  at 10%  through
     December 31, 2000,  at which time all interest and  principal  are due. The
     loan is secured by 500,000 shares of the Company's common stock.

5.   PRIVATE PLACEMENT OF COMMON AND PREFERRED STOCK

     In conjunction with a private offering to accredited investors during 1997,
     the Company  issued Class A and Class B warrants to acquire common stock at
     50% and 75%, respectively, of the average bid price of the Company's common
     stock through January 15, 1998 and July 15, 1998, respectively.  During the
     year ended  September  30, 1998,  the Company  received  $105,558  from the
     exercise of the warrants.

     On March 15, 1998, the Company issued a $250,000  preferred  stock offering
     at $5,000 per unit.  Each unit  consisted  of 1,000  shares of  convertible
     preferred  stock and 100,000 Class A common stock  purchase  warrants.  The
     preferred  stock is non-voting  and each unit is  convertible  into 100,000
     shares of common stock.  The A Warrants are exercisable at $1 per share and
     were to expire March 15, 2000. On October 8, 1998,  the Company  elected to
     offer an  additional  50  units  under  the  terms of the  March  15,  1998
     offering.  The offering  expired July 31, 1999.  In  conjunction  with this
     offering,  the expiration  date of the warrants was extended until December
     31,  2000.  All  preferred  stock has been  converted  to  common  stock at
     September 30, 1999.

     On August 1, 1999, the Company  issued a $300,000  common stock offering at
     $10,000 per unit.  Each unit  consisted  of 30,000  shares of  unrestricted
     common stock,  40,000 shares of restricted  common stock and 50,000 Class A
     common stock  warrants.  The Class A warrants are  exercisable at $1.50 per
     share and expire on December 31, 2001.  The offering has been amended twice
     and each unit now consists of 5,000 shares of  unrestricted  common  stock,
     25,000 shares of restricted common stock and 50,000 warrants.

                                      F-11
<PAGE>
                         NATIONAL SCIENTIFIC CORPORATION
                          (A Development Stage Company)

                    NOTES TO FINANCIAL STATEMENTS, CONTINUED
                           September 30, 1999 and 1998


5.   PRIVATE PLACEMENT OF COMMON AND PREFERRED STOCK, CONTINUED

     The Company entered into an agreement to obtain  unrestricted  common stock
     from the family of its Chairman.  The terms of the  agreement  provide that
     the family will  receive  1.88 shares of  restricted  common stock for each
     share of unrestricted common stock used in the offering.  Additionally, the
     Chairman is to receive 4% of all future corporate gross revenues  generated
     from the sale of the Company's products.

     In  conjunction  with the August 1, 1999  offering,  the Company  agreed to
     issue  one  share of  common  stock to two key  employees  for each  dollar
     raised,  provided the offering generates a minimum of $150,000. The maximum
     number of shares to be issued is 300,000 to each  employee.  A liability of
     $15,000 has been accrued for issuance of the stock at September 30, 1999.

     None of the warrants associated with either offering have been exercised at
     September 30, 1999.

6.   LEASE COMMITMENTS

     The Company  leases its  headquarters  in Phoenix,  under a  non-cancelable
     operating  lease which  expires on September 30, 2001.  The lease  requires
     monthly  payments  of $2,300  plus sales  taxes and  contains no renewal or
     purchase options.

     Future minimum lease obligations at September 30, 1999 are as follows:

          Year Ending September 30,
          -------------------------

                   2000                           $ 27,600
                   2001                             27,600
                                                  --------
                                                  $ 55,200
                                                  ========

     Rent  expense  for  the  years  ended  September  30,  1999  and  1998  was
     approximately $26,500 and $27,600, respectively.

7.   INCOME TAXES

     Deferred  income taxes  consist of the  following at September 30, 1999 and
     1998:

                                                     1999                1998
                                                  ---------           ---------
         Net operating loss carryforwards         $ 930,000           $ 685,000
         Contribution carryforwards                  22,000              13,000
         Valuation allowance                       (952,000)           (698,000)
                                                  ---------           ---------
                                                  $      --           $      --
                                                  =========           =========

                                      F-12
<PAGE>
                         NATIONAL SCIENTIFIC CORPORATION
                          (A Development Stage Company)

                    NOTES TO FINANCIAL STATEMENTS, CONTINUED
                           September 30, 1999 and 1998


7.   INCOME TAXES, CONTINUED

     A reconciliation of expected to actual taxes follows:

     Expected federal and state tax recovery at 40%    $(279,000)     $(309,000)
     Contribution carryforward                             9,000          9,000
     Stock compensation                                   16,000         26,000
     Tax benefits not realized - valuation allowance     254,000        274,000
                                                       ---------      ---------
     Financial statement recovery of income taxes      $      --      $      --
                                                       =========      =========

     The  Company  has  recorded  valuation  allowances  to offset  the value of
     deferred tax assets,  since it has recorded  losses from  operations  since
     1996 and the utilization of those assets is uncertain.

     The  Company  has  net  operating  loss   carryforwards   of  approximately
     $2,300,000  at  September  30,  1999,  which may be used to  offset  future
     federal taxable income through 2019 and state taxable income through 2004.

     Due to changes in management,  the Company has not filed income tax returns
     for several years.  Additionally,  due to changes in ownership during 1996,
     the Company expects that the availability of losses generated prior to that
     time will not be  significant.  Valuation  allowances  would be recorded to
     offset any value assigned,  since the Company is in the  development  stage
     and has recorded losses from operations for several years.

8.   RELATED PARTY TRANSACTIONS

     The Company paid  professional  and  consulting  fees, in  connection  with
     product research and development and operations of  approximately  $548,000
     and $370,000 to various  officers and key  employees of the Company  during
     the  years  ended  September  30,  1999 and 1998,  respectively.  Effective
     September 1, 1999,  the Chairman is to receive  compensation  of $7,000 per
     month subject to cash availability.

9.   SALE OF SUBSIDIARIES

     Effective  September  30,  1997,  the Company sold its interest in both the
     water treatment and retail divisions of Eden Systems,  Inc. The Company was
     to receive a down payment of $25,000 and  additional  payments based upon a
     percentage of the future sales generated by Eden's  acquirers.  The Company
     received $25,000 from the sale during the year ended September 30, 1997 and
     $12,500  during the year ended  September 30, 1999. No additional  payments
     have been received since that time, nor does  management  expect to receive
     any additional payments related to the sale.

                                      F-13
<PAGE>
                         NATIONAL SCIENTIFIC CORPORATION
                          (A Development Stage Company)

                    NOTES TO FINANCIAL STATEMENTS, CONTINUED
                           September 30, 1999 and 1998


10.  YEAR 2000 DISCLOSURES

     The Year 2000 issue  results from  computer  hardware or software  programs
     written using two digits to identify the year. These computer  programs and
     hardware were designed and developed without consideration of the impact of
     the upcoming  change in the century.  If not  corrected,  such hardware and
     software  programs  could create  erroneous  information  by or at the year
     2000.

     The Company  believes  that its computer  systems are Year 2000  compliant.
     However, there can be no assurance that problems will not be encountered or
     that the Company  will not incur costs  associated  with Year 2000  issues.
     These issues may have an adverse effect on future results of operations.

     The Company may also be impacted by the ability of third  parties to become
     Year 2000 compliant.  Those parties include suppliers,  customers and other
     third party  business  partners.  If the  Company's  suppliers,  customers,
     business  partners and others are unable to  remediate  their own Year 2000
     issues, the Company may be exposed to financial risk.

11.  DISCLOSURES ABOUT FAIR VALUE OF FINANCIAL INSTRUMENTS

     Statement of Financial  Accounting  Standards No. 107,  "Disclosures  about
     Fair Value of Financial  Instruments"  requires  that the Company  disclose
     estimated fair values for its financial instruments.  The following summary
     presents  a  description  of the  methodologies  and  assumptions  used  to
     determine such amounts.

     Fair value estimates are made at a specific  point in time and are based on
     relevant market information and information about the financial instrument;
     they are  subjective  in  nature  and  involve  uncertainties,  matters  of
     judgment  and,  therefore,  cannot  be  determined  with  precision.  These
     estimates  do not reflect any  premium or discount  that could  result from
     offering for sale at one time the Company's entire holdings of a particular
     instrument.   Changes  in  assumptions  could   significantly   affect  the
     estimates.

     Since the fair value is  estimated as of  September  30, 1999,  the amounts
     that will  actually be realized or paid at  settlement  of the  instruments
     could be significantly different.

     The  carrying  amount of cash and cash  equivalents  is assumed to be their
     fair  value  because  of  the  liquidity  of  these  instruments.  Accounts
     receivable,  accounts payable and accrued  expenses  approximate fair value
     because of the short maturity of these instruments. The recorded balance of
     a note payable is assumed to be the fair value since the rate  specified in
     the note approximate current market rates.

                                      F-14
<PAGE>
                         NATIONAL SCIENTIFIC CORPORATION
                          (A Development Stage Company)

                    NOTES TO FINANCIAL STATEMENTS, CONTINUED
                           September 30, 1999 and 1998


12.  STOCK OPTIONS

     The Company  from time to time  issues  stock  options for the  purchase of
     restricted stock to directors,  officers,  employees and  consultants.  The
     Company does not have a qualified  stock option plan for its executives and
     employees.

     The Company  adopted  Statement of Financial  Accounting  Standards No. 123
     (FAS  123),  "Accounting  for  Stock-Based   Compensation,"  which  permits
     entities to recognize as expense over the vesting  period the fair value of
     all  stock-based  awards  on the  date of  grant.  Under  the  terms of the
     Company's  stock  options  granted  to  certain  directors,   officers  and
     consultants, the Board of Directors, at its sole discretion, will determine
     when certain  options  granted  shall be fully vested and  exercisable.  At
     September 30, 1998 and 1999, all outstanding  stock options had been deemed
     vested, and were fully exercisable at fiscal year end.

     In accordance  with FAS 123, which was effective as of January 1, 1996, the
     fair value of option  grants is  estimated  on the date of grant  using the
     Black-Scholes  option-pricing model for proforma footnote purposes with the
     following  assumptions used for grants in all years;  dividend yield of 0%,
     risk-free  interest  rate of 6%,  and  expected  option  life of 2.5 years.
     Expected volatility was assumed to be 50% in both 1998 and 1999.

                                                             Weighted   Weighted
                                                   Number     Average    Average
                                                     Of      Exercise     Fair
                                                   Shares     Price       Value
                                                  --------   --------   --------

     Options Outstanding, September 30, 1997        34,000    $ .05      $ .51
         Granted and reissued                      334,000      .09        .16
         Exercised                                 (16,000)     .05        .47
         Canceled and reissued                     (34,000)     .05        .51
                                                  --------    -----      -----

     Options Outstanding, September 30, 1998       318,000      .09        .18
         Granted                                   270,000      .09        .17
         Exercised                                (496,000)     .10        .16
         Canceled                                       --       --         --
                                                  --------    -----      -----

     Options Outstanding, September 30, 1999        92,000    $ .09      $ .17
                                                  ========    =====      =====

                                      F-15
<PAGE>
                                    PART III

ITEM 1. INDEX TO EXHIBITS

Exhibit No.                        Description of Exhibit
- -----------                        ----------------------

3.1           Certificate of Incorporation of the Registrant

3.2           Form of Bylaws of the Registrant

4.1           Form of Common Stock Certificate

4.2           Form of Preferred Stock Certificate

4.3           Promissory Note Secured by Common Stock of the Registrant in the
              amount of $110,000.00 dated December 31, 1998

10.1          Warrant Agreement as part of Private Offering dated August 1, 1999

10.2          Warrant Agreement as part of Private Offering dated March 15, 1998

10.3          Lease Agreement between Targun Properties, Inc. and the Registrant
              dated August 21, 1998

10.3(i)       First Lease Addendum between Targun Properties, Inc. and the
              Registrant dated July 27, 1999

10.3(ii)      Second Lease Addendum between Targun Properties, Inc. and the
              Registrant dated September 15, 1999

10.4          Assignment Agreement between El-Badawy Amien El-Sharawy, Majid M.
              Hashemi  and  the  Registrant  for  the   HETROJUNCTION   BIPOLAR
              TRANSISTOR HAVING WIDE BANDGAP,  LOW INTERDIFFUSION  BASE-EMITTER
              JUNCTION

10.5          Assignment Agreement between El-Badawy Amien El-Sharawy, Majid M.
              Hashemi and the Registrant for the VERTICAL HETROJUNCTION BIPOLAR
              TRANSISTOR

10.6          Assignment Agreement between El-Badawy Amien El-Sharawy, Majid M.
              Hashemi  and the  Registrant  for the  MONOLITHIC  INDUCTOR  WITH
              MAGNETIC FLUX LINES GUIDED AWAY FROM SUBSTRATE

10.7          Assignment Agreement between El-Badawy Amien El-Sharawy, Majid M.
              Hashemi  and the  Registrant  for the  MONOLITHIC  INDUCTOR  WITH
              MAGNETIC FLUX LINES GUIDED AWAY FROM  SUBSTRATE  Continuation  in
              Part

10.8          Assignment Agreement between El-Badawy Amien El-Sharawy, Majid M.
              Hashemi and the  Registrant  for the STATIC MEMORY CELL WITH LOAD
              CIRCUIT USING A TUNNEL DIODE

10.9          Assignment  Agreement  between El-Badawy Amien El-Sharawy and the
              Registrant for the TE MODE DIELECTRIC RESONATOR

10.10         Assignment  Agreement  between El-Badawy Amien El-Sharawy and the
              Registrant for the DISTRIBUTED AMPLIFIER AND METHOD THEREFOR

10.11         Assignment  Agreement  between El-Badawy Amien El-Sharawy and the
              Registrant for the DISTRIBUTED AMPLIFIER Continuation in Part

27            Financial Data Schedule
<PAGE>
                                   SIGNATURES

In  accordance  with  Section 12 of the  Securities  Exchange  Act of 1934,  the
registrant caused this registration  statement to be signed on its behalf by the
undersigned, thereunto duly authorized.

NATIONAL SCIENTIFIC CORPORATION

Date: December 30, 1999

      By:  /s/ L. L. Ross
           -----------------------
           L. L. Ross
           CHAIRMAN OF THE BOARD, PRESIDENT AND CHIEF EXECUTIVE OFFICER

      By:  /s/ Vernon M. Traylor
           -----------------------
           Vernon M. Traylor
           CORPORATE SECRETARY

                          [SEAL OF THE STATE OF TEXAS]

                               The State of Texas

                               SECRETARY OF STATE

                            CERTIFICATE OF AMENDMENT
                                       OF

                         NATIONAL SCIENTIFIC CORPORATION
                                    FORMERLY:
                         AMERICAN MORTGAGE COMPANY, NC.

The  undersigned,  as Secretary  of State of Texas,  hereby  certifies  that the
attached  Articles of Amendment for the above named entity have been received in
this office and are found to conform to law

ACCORDINGLY  the  undersigned,  as  Secretary  of  State,  and by  virtue of the
authority  vested in the  Secretary by law,  hereby issues this  Certificate  of
Amendment.

Dated:       May 16, 1996

Effective:   May 16, 1996

[SEAL OF THE STATE OF TEXAS]
                                                                              VD
                                        ----------------------------------------
                                                   Antonio 0. Garza, Jr.
                                                    Secretary of State
<PAGE>
                              ARTICLES OF AMENDMENT
                                     TO THE
                            ARTICLES OF INCORPORATION

Pursuant to the  provisions  of Article 4.04 of the Texas  Business  Corporation
Act, the undersigned  corporation  adopts the following articles of amendment to
its articles of incorporation:

                                   ARTICLE ONE

The name of the corporation is AMERICAN MORTGAGE COMPANY, INC.

                                   ARTICLE TWO

The  following  amendment  to the articles of  incorporation  was adopted by the
shareholders  of the  corporation  on May  14,  1996  changing  the  name of the
corporation to

                         NATIONAL SCIENTIFIC CORPORATION

The  amendment  alters or changes  only  article one of the  original or amended
articles of incorporation,  no other article of the original or amended articles
of  incorporation  are altered or changed by this amendment and the full text of
each provision altered is as follows:

(1) The name of the corporation shall be

                         NATIONAL SCIENTIFIC CORPORATION

                                  ARTICLE THREE

The number of shares of the corporation outstanding at the time of such adoption
was  10,000,000;  and  the  number  of  shares  entitled  to  vote  thereon  was
10,000,000.

                                  ARTICLE FOUR

The number of shares voted for such  amendments  was in excess of the two--third
(2/3) majority  required;  and the number of shares voted against such amendment
was less than one-third (1/3) of the shares entitled to vote thereon.

Dated May 15, 1996.

                                        By: /s/ Robert Dultz
                                            ------------------------------------
                                            Robert Dultz; Its Chairman,
                                            President and CEO
<PAGE>
                          [SEAL OF THE STATE OF TEXAS]

                               The State of Texas

                               SECRETARY OF STATE

                            CERTIFICATE OF CORRECTION
                                       OF

                         NATIONAL SCIENTIFIC CORPORATION
                               CHARTER NO. 115574

The  undersigned,  as Secretary  of State of Texas,  hereby  certifies  that the
attached Articles of Correction, duly executed pursuant to the provisions of the
Texas Miscellaneous  Corporation Laws Act, have been received in this office and
are found to conform to law.

ACCORDINGLY  the  undersigned,  as  Secretary  of  State,  and by  virtue of the
authority  vested in the  Secretary by law,  hereby issues this  Certificate  of
Correction and attaches hereto a copy of the Articles of Correction.

Dated: September 9, 1996

[SEAL OF THE STATE OF TEXAS]
                                                                             dlm
                                        ----------------------------------------
                                                  Antonio 0. Garza, Jr.
                                                   Secretary of State
<PAGE>
                             ARTICLES OF CORRECTION
                                       TO
                            ARTICLES OF AMENDMENT TO
                            ARTICLES OF INCORPORATION
                                       OF
                        NATIONAL SCIENTIFIC CORPORATION,
                       FORMERLY AMERICAN MORTGAGE COMPANY

These articles are adopted to correct a document  which is an inaccurate  record
of  corporate  action,  contains an  inaccurate  or  erroneous  statement or was
defectively or erroneously executed, sealed, acknowledged or verified.

                                   ARTICLE ONE

The name of the corporation is NATIONAL SCIENTIFIC CORPORATION

                                   ARTICLE TWO

The  document  to be  corrected  is  Articles of  Amendment  to the  Articles of
Incorporation  which was filed in the  Office of the  Secretary  of State on the
27th day of March, 1995.

                                  ARTICLE THREE

Article Six (on page 2),  Article Three (on page 2) and Article Four (on page 2)
of the Articles of Amendment to the  Articles of  Incorporation  are  incorrect;
they each indicate  that the number of  outstanding  shares as 400,000,  and the
number of shares voted for such amendments as 400,000. Article Five (on page 1),
Article Six (on page 2),  Article  Three (on page 2),  Article Four (on page 2),
Article  Five  (on  page 2) and  Article  Six (on  page  3) of the  Articles  of
Amendment to the Articles of Incorporation are incorrectly numbered.

                                  ARTICLE FOUR

Articles  Five  through  Nine of the  Articles of  Amendment  to the Articles of
Incorporation read correctly as follows:

                                  "ARTICLE FIVE

The aggregate  number of shares which the  Corporation  shall have  authority to
issue is eighty million  (80,000,000) shares of common stock of the par value S.
01 each and four million  (4,000.000) shares of preferred stock of the par value
$. 10 each. Each of the 50,000 shares of Common Stock $2.00 par value, presently
outstanding  shall upon the filing of this  amendment  with the Secretary of the
State of Texas be  reconstituted  as and become converted into two hundred (200)
fully paid and nonassessable shares of common stock of the Corporation, $.01 par
<PAGE>
value, and shares of Preferred Stock, $1.00 par value, presently outstanding, if
any shall upon the filing of this  amendment  with the Secretary of the State of
Texas be  reconstituted  as and  become  converted  into ten (10) fully paid and
nonassessable  shares of  preferred  stock of the  Corporation,  $.10 par value,
without  any  further  action  on the  part of the  Board  of  Directors  or the
shareholders.

                                   ARTICLE SIX

The number of shares of the corporation outstanding at the time of such adoption
was 50,000; and the number of shares entitled to vote thereon was 50,000.

                                  ARTICLE SEVEN

The number of shares  voted for such  amendments  was 45,571;  and the number of
shares voted against such amendment was 0.

                                  ARTICLE EIGHT

The manner in which any exchange,  reclassification  or  cancellation  of issued
shares provided for in the amendment shall be effected is as follows:

The present  holder of 1 share of $2.00 par value  common stock may exchange the
share for 200 shares of $.01 par value common stock The present holder,  if any,
of 1 share of $1.00 par value  preferred  stock  may  exchange  the share for 10
shares of $.10 par value preferred stock

                                  ARTICLE NINE

The  manner in which  such  amendment  effect a change  in the  amount of stated
capital,  and  amount of stated  capital as  changed  by such  amendment  are as
follows: NONE."

Dated August 26, 1996

                                        NATIONAL SCIENTIFIC CORPORATION

                                        /s/ Terry Neild
                                        ----------------------------------------
                                        Terry Neild, President

                                     BY-LAWS

                                       OF

                         NATIONAL SCIENTIFIC CORPORATION

                               A TEXAS CORPORATION

                                    ARTICLE I

                                  SHAREHOLDERS

     1. SHARE  CERTIFICATES.  Certificates  representing  shares  prescribed  by
Articles 2.19 and 2.22 of the Texas  Business  Corporation  Act and by any other
applicable  application of law, including any limitation or denial of preemptive
rights,  which shall be signed by the President and/or a  Vice-President  and/or
the Chairman of the Board of Directors  and/or the Secretary of the corporation,
and may be sealed with the seal of the corporation or a facsimile  thereof.  The
signatures of any such officers upon a certificate  may be  facsimiles.  In case
any officer  who has signed or whose  facsimile  signature  has been placed upon
such certificate shall have ceased to be such officer before such certificate is
issued,  it may be issued by the corporation  with the same effect as if be were
such officer at the date of its issuance.

     No  certificate  shall be  issued  for any share  until  the  consideration
therefor has been fully paid.

     2. FRACTIONAL SHARE INTERESTS OR SCRIP. The corporation may issue fractions
of a  share,  arrange  for the  disposition  of  fractional  interests  by those
entitled  thereto,  pay in cash the fair value of fractions of a share as of the
time when those  entitled to receive such  fractions  are  determined,  or issue
scrip in registered or bearer form,  which shall entitle the holder to receive a
certificate for a full share upon the surrender of such scrip aggregating a full
share. A certificate for a fractional  share shall,  but scrip shall not, unless
otherwise  provided  there-in,  entitle the holder to exercise voting rights, to
receive  dividends  thereon,  and to  participate  in any of the  assets  of the
corporation in the event of liquidation.  The Board of Directors may cause scrip
to be issued subject to the condition that it shall become void if not exchanged
for certificates representing full shares before a specified date, or subject to
the condition that the shares for which the scrip is exchangeable may be sold by
the corporation and the proceeds thereof distributed to the holders of scrip, or
subject  to any other  conditions  which the Board of  Directors  may  determine
advisable.

     3. SHARE  TRANSFERS.  Upon compliance  with any provisions  restricting the
transferability   of  shares   that  may  be  set  forth  in  the   Articles  of
Incorporation,  these Bylaws, or any written agreement in respect thereof,  and,
in  accordance  with the  provisions  of  Articles  2.19  and 2.22 of the  Texas

                         By-Laws of NATIONAL SCIENTIFIC CORPORATION Page 1 of 10
<PAGE>
Business  Corporation Act,  transfers of shares of the corporation shall be made
only on the share transfer  records of the corporation by the registered  holder
thereof,  or by his  attorney  thereunto  authorized  by power of attorney  duly
executed  and filed with the  Secretary of the  corporation,  or with a transfer
agent or a registrar and on surrender of the certificate or certificates or such
shares properly endorsed and the payment of all taxes thereon, if any. Except as
may be  otherwise  provided by law, the person in whose name shares stand on the
share transfer records of the corporation  shall be deemed the owner thereof for
all purposes as regards the corporation;  provided that whenever any transfer of
shares shall be made for collateral security, and not absolutely,  such fact, ii
known to the Secretary of the corporation, shall be so expressed in the entry of
transfer.

     4.  RECORD  DATE  FOR   SHAREHOLDERS,   For  the  purpose  of   determining
shareholders  entitled to notice of or to vote at any meeting of shareholders or
any  adjournment  thereof,  or entitled to receive a distribution  (other than a
distribution involving a purchase or redemption by the corporation of any of its
own  shares)  or a  share  dividend,  or in  order  to make a  determination  of
shareholders for any other proper purpose (other than  determining  shareholders
entitled to consent to action by  shareholders  proposed  to be taken  without a
meeting of shareholders),  the Board of Directors of the corporation may provide
that the share  transfer  records  shall be closed  for a stated  period  not to
exceed,  in any case,  sixty days. If the share transfer records shall be closed
for the purpose of determining the shareholders entitled to notice of or to vote
at a meeting of shareholders, such share transfer records shall be closed for at
least ten days immediately  preceding such meeting. In lieu of closing the share
transfer records, the Board of Directors may fix in advance a date as the record
date for any such  determination of shareholders,  such date to be not more than
sixty  days and,  in case of a meeting of  shareholders,  not less than ten days
prior to the date on which the particular  action,  requiring such determination
of shareholders, is to be taken. If the share transfer records are not dosed and
no record date is fixed for any determination of shareholders, the date on which
notice of the meeting is mailed or the date on which the resolution of the Board
of Directors  declaring such  distribution or share dividend is adopted,  as the
case may be,  shall be the record date for the  determination  of  shareholders.
When a  determination  of  shareholders  entitled  to  vote  at any  meeting  of
shareholders has been made as provided in this section, such determination shall
apply to any adjournment  thereof except where the  determination  has been made
through the dosing of share  transfer  records and the stated  period of closing
has expired. Unless a record date shall have previously been fixed or determined
pursuant to this  section,  whenever  action by  shareholders  is proposed to be
taken by  consent in writing  without a meeting  of  shareholders,  the Board of
Directors  may fix a record  date for the  purpose of  determining  shareholders
entitled to consent to that action,  which  record date shall not  precede,  and
shall not be more than ten days after, the date upon which the resolution fixing
the record date is adopted by the Board of Directors. If no record date has been
fixed by the Board of  Directors  and the prior action of the Board of Directors
is not  required  by the Texas  Business  Corporation  Act,  the record dare for
determining  shareholders  entitled  to consent  to action in writing  without a
meeting shall be the first date on which a signed written  consent setting forth

                         By-Laws of NATIONAL SCIENTIFIC CORPORATION Page 2 of 10
<PAGE>
the action  taken or proposed to be taken is  delivered  to the  corporation  as
provided in Section A of Article 9.10 of the Texas Business  Corporation  Act or
an  officer  or agent of the  corporation  having  custody of the books in which
proceedings of meetings of shareholders are recorded.  Delivery shall be by hand
or by certified or registered mail,  return receipt  requested.  Delivery to the
Corporation's principal place of business shall be addressed to the president or
the principal executive officer of the corporation. If no record date shall have
been fixed by the Board of Directors  and prior action of the Board of Directors
is  required  by the  Texas  Business  Corporation  Act,  the  record  date  for
determining  shareholders  entitled  to consent  to action in writing  without a
meeting  shall be at the  close of  business  on the dare on which  the Board of
Directors adopts a resolution taking such prior action.

     5.  MEANING OF  CERTAIN  TERMS.  As used  herein in respect of the right to
notice of a meeting of  shareholders  or a waiver  thereof or to  participate or
vote  thereat or to consent or dissent in writing in lieu `of a meeting,  as the
case may be, the term "share" or "shares" or  "shareholder"  or  "shareholders'!
refers to an outstanding share or shares and to a holder or holders of record of
outstanding shares when the corporation is authorized to issue only one class of
shares,  and said reference is also intended to include any outstanding share or
shares and any holder or holders of  outstanding  shares of any class upon which
or upon whom the  Articles of  Incorporation  confer such rights where there are
two or more  classes  or series  of shares or upon  which or upon whom the Texas
Business  Corporation Act confers such rights  notwithstanding that the Articles
of Incorporation may provide for more than one class or series of shares, one or
more of which are limited or denied such rights thereunder.

     6. SHAREHOLDER MEETINGS.

     - TIME.  The  annual  meeting  shall be held on the date fixed from time to
time by the Board of  Directors;  provided  that any such date shall not be more
than thirteen months after the date of the preceding  annual meeting.  A special
meeting shall be held on the date fixed by the  directors  except when the Texas
Business  Corporation  Act confers the right to call a special  meeting upon the
shareholders,

     - PLACE.  Annual meetings and special  meetings shall be held at such place
within or without  the State of Texas as shall be fixed from time to time by the
Board of  Directors.  In the event of failure of the Board of  Directors  to fix
such  place,  any such  meeting  shall be held at the  registered  office of the
corporation in Texas.

     - CALL.  Annual meetings may be called by the directors or the President or
by any officer instructed by the directors or the President to call the meeting.
Special  meetings may be called in like manner or by any other person or persons
authorized to do so by the provisions of the Texas Business Corporation Act.

     - NOTICE OR WAIVER OF NOTICE.  Written or printed notice stating the place,
day, and hour of the meeting and, in case of a special  meeting,  the purpose or
purposes for which the meeting is called,  shall be delivered  not less than ten

                         By-Laws of NATIONAL SCIENTIFIC CORPORATION Page 3 of 10
<PAGE>
days  (or  not  less  than  any  such  other  minimum  period  of days as may be
prescribed  by the Texas  Business  Corporation  Act) nor more than  sixty  days
before  the date of the  meeting,  either  personally  or by mail,  by or at the
direction of the President,  the Secretary, or the officer or person calling the
meeting,  to each  shareholder.  The  notice of any  annual  meeting  shall also
contain a  statement  of the  purpose or  purposes  thereof  whenever  the Texas
Business  Corporation  Act shall require such statement The notice of any annual
or special  meeting shall also include,  or be  accompanied  by, any  additional
statements,   information,   or  documents  prescribed  by  the  Texas  Business
Corporation Act. Whenever any notice is required to be given to any shareholder,
a waiver  thereof in writing signed by any such  shareholder,  whether before or
after the time stated  therein,  shall be the  equivalent to giving such notice.
Notice need not be given to a shareholder  in  circumstances  in which the Texas
Business Corporation Act authorizes the omission of such notice.

     - VOTING  LIST.  The officer or agent having  charge of the share  transfer
records for shares of the corporation  shall make, at least ten days before each
meeting of shareholders, a complete list of the shareholders entitled to vote at
the meeting or any adjournment thereof, arranged in alphabetical order, with the
address  of, and the number of shares held by,  each.  The list shall be kept on
file at the registered  office or principal place of business of the corporation
in the State of Texas for a period of at least ten days prior to the meeting and
shall be subject to  inspection  by any  shareholder  at any time  during  usual
business  hours.  Such list shall also be produced and kept open at the time and
place of the meeting and shall be subject to the  inspection of any  shareholder
during the whole time of the meeting.  The original share transfer records shall
be prima fade evidence as to who are the  shareholders  entitled to examine such
list or share transfer records or to vote at any meeting of shareholders.

     - CONDUCT OF MEETING.  Meetings of the shareholders  shall be presided over
by one of the  following  officers in the order of seniority  and if present and
acting - the Chairman of the Board, if any, the  Vice-Chairman  of the Board, if
any, the President, a Vice-President,  or, if none of the foregoing is in office
and  present and acting,  by a chairman  to be chosen by the  shareholders.  The
Secretary of the corporation,  or in his absence, an Assistant Secretary,  shall
act as  secretary  of every  meeting,  but,  if  neither  the  Secretary  nor an
Assistant  Secretary  is present,  the Chairman of the meeting  shall  appoint a
secretary of the meeting.

     - PROXY  REPRESENTATION.  Every shareholder may authorize another person or
persons  to act for him by  proxy  in all  matters  in  which a  shareholder  is
entitled to participate, whether for the purposes of determining his presence at
a meeting, or whether by waiving notice of any meeting,  voting or participating
at a meeting,  or expressing consent or dissent without a meeting, or otherwise.
Every proxy shall be executed in writing by the  shareholder.  No proxy shall be
valid after  eleven  months  from the date of its  execution,  unless  otherwise
provided in the proxy.

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<PAGE>
     - INSPECTORS - APPOINTMENT.  The directors, in advance of any meeting, may,
but need  not,  appoint  one or more  inspectors  to act at the  meeting  or any
adjournment thereof. If an inspector or inspectors are not appointed, the person
presiding at the meeting may, but need not, appoint one or more  inspectors.  In
case any person who may be appointed as an inspector fails to appear or act, the
vacancy may be filled by  appointment  made by the  directors  in advance of the
meeting or at the meeting by the person presiding  thereat.  Each inspector,  if
any,  before  entering upon the discharge of his duties,  shall take and sign an
oath  faithfully  to execute the duties of inspector at such meeting with strict
impartiality and according to the best of his ability.  The inspectors,  if any,
shall  determine the number of shares  outstanding and the voting power of each,
the shares  represented at the meeting,  the existence of a quorum, the validity
and effect of proxies, and shall receive votes,  ballots, or consents,  hear and
determine all challenges and questions  arising in connection  with the right to
vote, count and tabulate all votes, ballots, or consents,  determine the result,
and do such acts as are proper to conduct the election or vote with  fairness to
all  shareholders.  On  request of the person  presiding  at the  meeting or any
shareholder, the inspector or inspectors, if any, shall make a report in writing
of any  challenge,  question or matter  determined  by him or them and execute a
certificate of any fact found by him or them.

     - QUORUM.  With  respect  to any  matter,  a quorum  shall be  present at a
meeting of  shareholders  if the holders of a majority of the shares entitled to
vote on that matter are represented at the meeting in person or by proxy. Once a
quorum is present at a meeting of shareholders,  the shareholders represented in
person or by proxy at the meeting may conduct  such  business as may properly be
brought before the meeting until it is adjourned,  and the subsequent withdrawal
from  the  meeting  of  any  shareholder  or  the  refusal  of  any  shareholder
represented  in person or by proxy to vote shall not affect  the  presence  of a
quorum at the meeting.  The shareholders  represented in person or by proxy at a
meeting of shareholders at which a quorum is not present may adjourn the meeting
until such time and to such place as may be  determined by a vote of the holders
of a majority of the shares represented in person or by proxy at that meeting.

     - VOTING. Shareholders shall not be entitled to cumulate their votes in the
election of directors.  In the election of  directors,  a plurality of the votes
cast shall elect. Except as the Texas Business  Corporation Act, the Articles of
Incorporation,  or these Bylaws may otherwise  provide,  the affirmative vote of
the  holders of a majority  of the shares  entitled  to vote on that  matter and
represented in person or by proxy at a meeting of  shareholders  at which quorum
is present shall be the act of the shareholders.

     7. INFORMAL ACTION.  Any action required by the Texas Business  Corporation
Act to be taken at a meeting of shareholders,  and any action which may be taken
at any annual or special meeting of shareholders may be taken without a meeting,
without  prior  notice,  and without a vote if a consent or consents in writing,
setting  forth the action so taken,  shall be signed by the holder or holders of
shares having not less than the minimum  number of votes that would be necessary
to take such action at a meeting at which the holders of all shares  entitled to
vote on the action were  present and voted.  Prompt  notice of the taking of any

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<PAGE>
action by shareholders  without a meeting by less than unanimous written consent
shall be given to those  shareholders  who did not  consent  in  writing  to the
action.  Every written consent signed by the holders of less than all the shares
entitled  to vote with  respect to the action that is the subject of the consent
shall bear the date of signature of each  shareholder who signs the consent.  No
written  consent  signed by the holders of less than all the shares  entitled to
vote with  respect to the action  that is the  subject of the  consent  shall be
effective to take the action that is the subject of the consent  unless,  within
sixty  days  after  the date of the  earliest  dated  consent  delivered  to the
corporation  in the  manner  required  by  Article  9.10 of the  Texas  Business
Corporation Act, a consent or consents signed by the bolder or holders of shares
having not less than the minimum number of votes that would be necessary to take
the action that is the subject of the consent are  delivered to the  corporation
by delivery to its  registered  office,  registered  agent,  principal  place of
business,  transfer agent, registrar,  exchange agent, or an officer or agent of
the corporation  having custody of the books in which proceedings of meetings of
shareholders are recorded.  Delivery shall be by hand or certified or registered
mail, return receipt requested. Delivery to the corporation's principal place of
business shall be addressed to the president or principal  executive  officer of
the corporation.  A telegram,  telex,  cablegram,  or similar  transmission by a
shareholder, or a photographic,  photostatic, facsimile, or similar reproduction
of a  writing  signed  by a  shareholder,  shall be  regarded  as  signed by the
shareholder for purposes of this section.  Subject to the provisions required or
permitted  by the  Texas  Business  Corporation  Act  for  notice  of  meetings,
shareholders  may  participate  in and hold a  meeting  by  means of  conference
telephone  or similar  communications  equipment  by means of which all  persons
participating  in  the  meeting  can  hear,  read  or  otherwise  apprehend  the
communications  of each  other.  Participation  in a  meeting  pursuant  to this
paragraph shall  constitute  presence in person at such meeting,  except where a
person  participates  in the meeting for the express purpose of objecting to the
transaction  of any  business  on the ground  that the  meeting is not  lawfully
called or convened,

                                   ARTICLE II

                               BOARD OF DIRECTORS

     1. FUNCTIONS GENERALLY. The powers of the corporation shall be exercised by
or under the authority of, and the business and affairs of the corporation shall
be managed under the direction of, a Board of Directors.

     2.  QUALIFICATIONS  AND NUMBER.  A director  need not be a  shareholder,  a
citizen of the United States,  or a resident of the State of Texas. The Board of
Directors  shall  consist of not less than three  persons,  which is the minimum
number of directors  fixed in the  Articles of  Incorporation,  as amended,  and
which shall be the fixed minimum number of directors  until changed.  The number
of directors may be increased or decreased by an amendment to these Bylaws or by
other action of the directors or the shareholders, but no decrease in the number
of  directors  shall have the  effect of  shortening  the term of any  incumbent
director.  The number of directors  shall never be less than one. The full Board
of Directors shall consist of the number of directors fixed herein.

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<PAGE>
     3. ELECTION AND TERM.  The initial Board of Directors  shall consist of the
directors named in the Articles of Incorporation and shall hold office until the
first  annual  meeting of  shareholders  and until  their  successors  have been
elected  and  qualified.  Thereafter,  directors  who are  elected  at an annual
meeting of  shareholders,  and  directors who are elected in the interim to fill
vacancies  and newly  created  directorships,  shall hold office  until the next
succeeding  annual meeting of shareholders  and until their successors have been
elected and qualified, In the interim between annual meetings of shareholders or
of special  meetings of shareholders  called for the election of directors,  any
vacancies in the Board of  Directors,  including  vacancies  resulting  from the
removal  of  directors  by the  shareholders  but which  are not  filled by said
shareholders,  may be  filled  by the  affirmative  vote  of a  majority  of the
remaining  directors,  although  less  than  a  quorum  exists.  Subject  to any
limitations  imposed by Article 2.34 of the Texas Business  Corporation Act, any
directorship  to be filled by reason of an increase  in the number of  directors
may be filled  by  election  at an annual  meeting  or at a special  meeting  of
shareholders called for that purpose.

     4. MEETINGS.

     - TIME.  Meetings shall be held at such time as the Board shall fix, except
that the first  meeting of a newly elected Board shall be held as soon after its
election as the directors may conveniently assemble.

     - PLACE.  Meetings  shall be held at such place within or without the State
of Texas as shall be fixed by the Board.

     - CALL.  No call shall be required for regular  meetings for which the time
and place have been fixed. Special meetings may be called by or at the direction
of the Chairman of the Board, if any, the  Vice-Chairman of the Board, if any, f
the President, or of a majority of the directors in office.

     - NOTICE OR ACTUAL OR  CONSTRUCTIVE  WAIVER No notice shall be required for
regular meetings for which the time and place have been fixed. Written, oral, or
any  other  mode of notice  of the time and  place  shall be given  for  special
meetings  in  sufficient  time  for the  convenient  assembly  of the  directors
thereat.  The  notice  of any  meeting  need  not  specify  the  business  to be
transacted or the purpose of the meeting. Any requirement of furnishing a notice
shall be waived by any director who signs a waiver of notice before or after the
meeting.  Attendance  of a director at a meeting  shall  constitute  a waiver of
notice of the meeting,  except  where the  director  attends the meeting for the
express  purpose of objecting  to the  transaction  of any business  because the
meeting is not lawfully called or convened.

                         By-Laws of NATIONAL SCIENTIFIC CORPORATION Page 7 of 10
<PAGE>
     - QUORUM AND  ACTION.  A  majority  of the full  Board of  Directors  shall
constitute  a quorum  unless a  different  number or portion is required by law.
Except as herein otherwise provided,  and except as may be otherwise provided by
law, the Articles of  Incorporation,  or these Bylaws,  the act of a majority of
the directors present at a meeting at which a quorum is present shall be the act
of the Board of Directors.

     - CHAIRMAN  OF THE  MEETING.  Meetings of the Board of  Directors  shall be
presided over by the following  persons in the order of seniority and if present
and acting -the Chairman of the Board, if any, the  Vice-Chairman  of the Board,
if any, the President, or any other director chosen by the Hoard.

     5. REMOVAL OF  DIRECTORS.  The entire Board of Directors or any  individual
director  may be removed  from office with or without  cause by the holders of a
majority of the shares then  entitled to vote at an election of  directors  at a
meeting  expressly called for that purpose.  In case the entire Board or any one
or more  directors  be so  removed,  new  directors  may be  elected at the same
meeting.

     6.  COMMITTEES.  The Board of Directors,  may, by  resolution  adopted by a
majority  of the full  Board,  designate  from  among  its  members  one or more
committees,  each of which shall be comprised of one or more of its members, and
may designate one or more of its members as alternate  members of any committee,
who may,  subject to any  limitations  imposed by the Board,  replace  absent or
disqualified  members at any meeting of that committee,  Any such committee,  to
the extent  provided in the  resolution,  shall have and may exercise all of the
authority  of the  Board  of  Directors  except  such  authority  as may  not be
delegated under the Texas Business Corporation Act.

     7.  INFORMAL  ACTION.  Any action  required or  permitted  to be taken at a
meeting  of  directors  or of any  committee,,  ii any,  may be taken  without a
meeting if a consent in  writing,  setting  forth the action so taken,  shall be
signed by all of the members of the Board of Directors or committee, as the case
may be.  Subject to the  provisions  required or pennitted by the Texas Business
Corporation  Act for notice of meetings,  members of the Board of Directors,  or
members of any committee  designated by the Board of Directors,  may participate
in and hold a meeting by means of conference telephone or similar communications
equipment  by means of which all persons  participating  in the meeting can hear
each  other.  Participation  in a  meeting  pursuant  to  this  paragraph  shall
constitute   presence  in  person  at  such  meeting,   except  where  a  person
participates  in the  meeting  for  the  express  purpose  of  objecting  to the
transaction  of any  business  on the ground  that the  meeting is not  lawfully
called or convened.

                                   ARTICLE III

                                    OFFICERS

     The corporation shall have a President and a Secretary,  each of whom shall
be  elected  by the Board of  Directors  at such time and in such  manner as the
Board  may deem  appropriate.  The  corporation  may have such  other  officers,

                         By-Laws of NATIONAL SCIENTIFIC CORPORATION Page 8 of 10
<PAGE>
including assistant officers, and agents as may be deemed necessary, each or any
of whom may be elected or  appointed  by the  directors or may be chosen in such
manner as the directors shall determine.  Any two or more offices may be held by
the same person.

     Unless  otherwise  provided in the  resolution of election or  appointment,
each  officer  shall hold  office  until the  meeting of the Board of  Directors
following the next annual  meeting of  shareholders  and until his successor has
been elected and qualified.

     The officers and agents of the  corporation  shall have the  authority  and
perform the duties in the  management  of the  corporation  as determined by the
resolution electing or appointing them, as the case may be.

     The Board of  Directors  may remove any  officer or agent  whenever  in its
judgment the best interests of the corporation will be served thereby.

                                   ARTICLE IV

                REGISTERED OFFICE AND AGENT - SHAREHOLDERS RECORD

     The address of the initial  registered  office of the  corporation  and the
name of the initial  registered  agent of the  corporation  are set forth in the
original Articles of Incorporation.

     The corporation  shall keep at its registered  office in the State of Texas
or at its principal place of business, or at the office of its transfer agent or
registrar,  if any, a record of its shareholders,  as prescribed by Article 2.44
of the Texas Business  Corporation Act and shall keep on file at said registered
office the voting list of  shareholders  for a period of at least ten days prior
to any meeting of shareholders.

                                    ARTICLE V

                                 CORPORATE SEAL

     The corporate seal shall have inscribed thereon the name of the corporation
and shall be in such form and  contain  such other words  and/or  figures as the
Board of Directors shall determine or the law require.

                                   ARTICLE VI

                                   FISCAL YEAR

     The fiscal year of the corporation  shall be fixed, and shall be subject to
change, by the Board of Directors.

                         By-Laws of NATIONAL SCIENTIFIC CORPORATION Page 9 of 10
<PAGE>
                                   ARTICLE VII

                              CONTROL OVER BY-LAWS

     After the adoption of the initial Bylaws by the initial Board of Directors,
the Board of Directors may amend or repeal the Bylaws or adopt new Bylaws except
as otherwise  provided by Article 2.23 of the Texas Business  Corporation Act or
any other applicable provision of law.

     The Board of  Directors  may remove any  officer or agent  whenever  in its
judgment the best interests of the corporation will be served thereby.

     I HEREBY CERTIFY that the foregoing is a full, true and correct copy of the
Bylaws of NATIONAL SCIENTIFIC CORPORATION,  a corporation of the State of Texas,
as in effect on the date hereof.

     WITNESS my hand and the seal of the corporation.

Dated: June 11, 1996

                                        /s/ Terry W. Neild
                                        ----------------------------------------
                                        Terry W. Neild, President of
                                        NATIONAL SCIENTIFIC CORPORATION

(SEAL)

                        By-Laws of NATIONAL SCIENTIFIC CORPORATION Page 10 of 10

SPECIMEN
       COMMON STOCK                                 COMMON STOCK
          NUMBER                                       SHARES

US                 NATIONAL SCIENTIFIC CORPORATION

                                                   SEE REVERSE FOR
                                                 CERTAIN DEFINITIONS
                                                 CUSIP 637479 10 6
INCORPORATED UNDER THE LAWS
   OF THE STATE OF TEXAS

THIS CERTIFIES THAT
IS THE RECORD HOLDER OF

   FULLY PAID AND NON-ASSESSABLE SHARES OF PREFERRED STOCK, $.10 PAR VALUE OF

                        NATIONAL SCIENTIFIC CORPORATION

transferable  on the books of the  Corporation by the holder hereof in person or
by  duly  authorized  attorney  upon  surrender  of  this  Certificate  properly
endorsed.  This  Certificate  and the shares  represented  hereby are issued and
shall be subject to all of the provisions of the Articles of  Incorporation  and
By-laws of the Corporation,  each as from time to time amended,  copies of which
are on file with the Transfer  Agent,  to all of which the holder by  acceptance
hereof assents.
     This  Certificate  is not valid until  countersigned  and registered by the
Transfer Agent and Registrar.
     WITNESS the facsimile seal of the Corporation and the facsimile  signatures
of its duly authorized officers.

Dated:

/s/ Vernon Traylor Jr.                                 /s/ L. L. Ross
CORPORATE SECRETARY             [CORPORATE SEAL]       CHAIRMAN OF THE BOARD

COUNTERSIGNED AND REGISTERED:
U.S. STOCK TRANSFER CORPORATION
     TRANSFER AGENT AND REGISTRAR

By:
                         AUTHORIZED SIGNATURE
<PAGE>
     The Articles of  Incorporation  of the Corporation on file in the office of
the Secretary of State of Texas set forth (a) the aggregate number of shares and
the par value of each class of capital shares that the Corporation is authorized
to issue, together with the designations,  preferences, limitations and relative
rights of each such class;  (b) a statement of the authority vested in the Board
of Directors to establish  series and to fix and determine the variations in the
relative rights and  preferences  between any such series of the Preferred Stock
so established; (c) a denial of preemptive rights of the shareholders to acquire
additional,  unissued  or  treasury  shares of the  Corporation;  and (d) to the
record holder of this  certificate  without  charge upon written  request to the
corporation at its registered office.
     The  Corporation  shall furnish  without charge to each  stockholder who so
requests a statement  of the powers,  designations,  preferences  and  relative,
participating,  optional or other  special  rights of each class of stock of the
Corporation   or  series   thereof  and  the   qualifications,   limitations  or
restrictions of such preferences  and/or rights.  Such requests shall be made to
the Corporation's Secretary at the principal office of the Corporation.

     The following  abbreviations,  when used in the  inscription on the face of
this  certificate,  shall be  construed  as though they were written out in full
according to applicable laws or regulations:
<TABLE>
<CAPTION>
<S>                                          <C>
TEN COM   -- as tenants in common            UNIF GIFT MIN ACT - ................ Custodian for ..............
                                                                     (Cust.)                       (Minor)
TEN ENT   -- as tenants by the entireties                             under Uniform Gifts to Minors
                                                           Act ...............................................
JT TEN    -- as joint tenants with right                                       (State)
             of survivorship and not as      UNIF TRF MIN ACT - ................ Custodian (until age .......)
             tenants in common                                  ................. under Uniform Transfers
                                                                     (Minor)
                                                                to Minors Act ................................
                                                                                          (State)
                    Additional abbreviations may also be used though not in the above list.
</TABLE>

For value received ....................... hereby sell, assign and transfer unto

                    PLEASE INSERT SOCIAL SECURITY OR OTHER
                         IDENTIFYING NUMBER OF ASSIGNEE

                    --------------------------------------
                    --------------------------------------
- --------------------------------------------------------------------------------
   PLEASE PRINT OR TYPEWRITE NAME AND ADDRESS, INCLUDING ZIP CODE, OF ASSIGNEE

- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
                                                                          Shares
- -------------------------------------------------------------------------
of the common stock represented by the within Certificate, and do hereby
irrevocably constitute and appoint
                                                                        Attorney
- -----------------------------------------------------------------------
to transfer the said stock on the books of the within named Corporation,
with full power of substitution in the premises.

Dated ___________________________________
                                        X ______________________________________

                                        X ______________________________________
                                        NOTE: THE SIGNATURE(S) TO THIS
                                              ASSIGNMENT MUST CORRESPOND WITH
                                              THE NAME(S) AS WRITTEN UPON THE
                                              FACE OF THE CERTIFICATE IN EVERY
                                              PARTICULAR, WITHOUT ALTERATION
                                              OR ENLARGEMENT OR ANY CHANGE
                                              WHATEVER.
Signature(s) Guaranteed

By _____________________________________
THE SIGNATURE(S)SHOULD BE GUARANTEED BY
AN ELIGIBLE GUARANTOR INSTITUTION (BANKS,
STOCKBROKERS, SAVINGS AND LOAN ASSOCIATIONS
AND CREDIT UNIONS WITH MEMBERSHIP IN AN
APPROVED SIGNATURE GUARANTEE MEDALLION
PROGRAM), PURSUANT TO S.E.C. RULE 17Ad-15.

SPECIMEN
                        NATIONAL SCIENTIFIC CORPORATION
               INCORPORATED UNDER THE LAWS OF THE STATE OF TEXAS

          NUMBER                                       SHARES
                                                   SEE REVERSE FOR
                                                 CERTAIN DEFINITIONS
THIS CERTIFIES THAT
IS THE OWNER OF

   FULLY PAID AND NON-ASSESSABLE SHARES OF PREFERRED STOCK, $.10 PAR VALUE OF
                        NATIONAL SCIENTIFIC CORPORATION

transferable only on the books of the Corporation by the holder hereof in person
or by duly  authorized  attorney  upon  surrender of this  Certificate  properly
endorsed.  This Certificate is not valid until  countersigned  and registered by
the Transfer Agent and Registrar.

     IN WITNESS  WHEREOF,  the  Corporation  has caused this  Certificate  to be
signed by the  facsimile  signatures of its duly  authorized  officers and to be
sealed with the facsimile seal of the Corporation.

Dated:

/s/ Vernon Traylor Jr.                                 /s/ L. L. Ross
CORPORATE SECRETARY             [CORPORATE SEAL]       CHAIRMAN OF THE BOARD

COUNTERSIGNED:
CORPORATE STOCK TRANSFER, INC.
370 - 17th Street, Suite 2350, Denver, Colorado 80202

By: ___________________________________________
Transfer Agent and Registrar Authorized Officer
<PAGE>
                        NATIONAL SCIENTIFIC CORPORATION
                         CORPORATE STOCK TRANSFER, INC.
                      TRANSFER FEE: $15.00 PER CERTIFICATE
- --------------------------------------------------------------------------------
     The following  abbreviations,  when used in the  inscription on the face of
this  certificate,  shall be  construed  as though they were written out in full
according to applicable laws or regulations:
<TABLE>
<CAPTION>
<S>                                          <C>
TEN COM   -- as tenants in common            UNIF GIFT MIN ACT - ................ Custodian for ..............
                                                                     (Cust.)                       (Minor)
TEN ENT   -- as tenants by the entireties                  under Uniform Gifts to Minors
JT TEN    -- as joint tenants with right of                Act of ............................................
             survivorship and not as tenants                                    (State)
             in common
                    Additional abbreviations may also be used though not in the above list.
</TABLE>
For value received ....................... hereby sell, assign and transfer unto

                    PLEASE INSERT SOCIAL SECURITY OR OTHER
                         IDENTIFYING NUMBER OF ASSIGNEE
                    --------------------------------------

                    --------------------------------------
               Please print or type name and address of assignee
 ................................................................................
 ................................................................................
 ................................................................................
 ......................................................................... Shares
of the Preferred Stock represented by the within Certificate and do hereby
irrevocably constitute and appoint
 ................................................................................
 ................................................................................
      Attorney to transfer the said stock on the books of the within named
         Corporation, with full power of substitution in the premises.

Dated ...................... 19 ..........
SIGNATURE GUARANTEED:                   X ______________________________________
                                        X ______________________________________
     THE SIGNATURE TO THIS  ASSIGNMENT  MUST CORRESPOND WITH THE NAME AS WRITTEN
UPON THE FACE OF THIS  CERTIFICATE IN EVERY  PARTICULAR,  WITHOUT  ALTERATION OR
ENLARGEMENT OR ANY CHANGE WHATSOEVER.  THE SIGNATURE(S) MUST BE GUARANTEED BY AN
ELIGIBLE  GUARANTOR   INSTITUTION   (Banks,   Stockbrokers,   Savings  and  Loan
Associations  and  Credit  Unions)  WITH  MEMBERSHIP  IN AN  APPROVED  SIGNATURE
GUARANTEE  MEDALLION  PROGRAM  PURSUANT  TO RULE  17Ad-15  UNDER THE  SECURITIES
EXCHANGE ACT OF 1934, AS AMENDED.

                                 PROMISSORY NOTE

$110,000.00                                                  Scottsdale, Arizona
                                                               December 31, 1998

     For valuable  consideration,  the receipt of which is hereby  acknowledged,
and to resolve  an  existing  dispute  as more  fully set forth in that  certain
Agreement  dated February 5th 1999,  National  Scientific  Corporation,  a Texas
corporation,  and  Eden  Systems  Inc.,  an  Arizona  corporation  (collectively
"Make?'),  hereby  promises to pay to Shirley  Bonifasi the principal sum of One
Hundred Ten Thousand  Dollars  ($110,000.00),  together with interest thereon at
10% per annum  from the date of this Note  until  paid.  Principal  and  accrued
interest shall be paid in lawful money of the United States of America

     The principal sum of $110,000.00 and the accrued  interest shall be paid in
its entirety in a lump sum payment due on December 31, 2000.

     Maker  shall have the right to prepay the  principal  balance;  and accrued
interest to date of payment, in one lump sum at any time without penalty.

     Maker promises to pay, in addition to the amount found due  hereunder,  all
collection costs incurred by the holder,  including reasonable  attorney's fees,
should the holder seek to enforce its rights under this Note,  including but not
limited to bringing a legal action therefore.  Any legal action shall be brought
in the  Superior  Court for the County of  Maricopa,  State of  Arizona,  and be
subject to the laws of the State of Arizona.

     Maker and any endorsers  hereof waive  diligence,  demand,  presentment for
payment and  protest,  and consent to the  extension  of time of payment of this
Note  without  notice.  Holder has a right to assign  this Note or any  interest
therein,  together with the  collateral  being  provided as security  therefore,
without notice to Maker.

     This Note is secured by 500,000 shares of National  Scientific  Corporation
common stock.

     DATED on the date set forth above.

                                        National Scientific Corporation,
                                        a Texas corporation

                                        By /s/ L. L. Ross
                                           -------------------------------------
                                           L.L. Ross, President
                                           Eden Systems, Inc.
                                           an Arizona corporation,

                                        By /s/ L. L. Ross
                                           -------------------------------------
                                           L.L. Ross, President

                                WARRANT AGREEMENT

                         NATIONAL SCIENTIFIC CORPORATION

     THIS AGREEMENT  (the  "Agreement"),  dated as of 1999, is between  NATIONAL
SCIENTIFIC CORPORATION (the "Company") and (the "Holder").

     WHEREAS,  in conjunction  with an offering of up to thirty (30) blocks (the
("Blocks"),  each  Block  consisting  of  thirty  thousand  (30,000)  shares  of
non-restricted  Common Stock, par value $0.01 per share, forty thousand (40,000)
shares at restricted  Common Stock, par value $0.01 per share and fifty thousand
(50,000) Class A Common Stock Purchase Warrants ("A Warrants or Warrants"),  the
Company and the Holder desire to enter into this  Agreement  governing the terms
of the A Warrants.

     NOW, THEREFORE,  in consideration of the promises and the mutual agreements
herein set, the parties agree as follows:

     SECTION 1. A WARRANTS AND FARM OF A WARRANT CERTIFICATES.

          (A)  Each A  Warrant  shall  entitle  the  Holder  of the  certificate
               representing such A Warrant to purchase upon the exercise thereof
               one  (i)  share  of  Common  Stock,  subject  to the  adjustments
               provided  for in Section 8 hereof,  at any time  after  issuance,
               until December 31, 2001 ("A Expiration Date") with respect to the
               A Warrants.

          (B)  The A Warrant  certificates shall be in registered form only. The
               text of the A Warrant  certificate  and the form of  election  to
               exercise an A Warrant shall be  substantially  in the form of the
               exhibit  attached  hereto.  Each A Warrant  certificate  shall be
               dated as of the date of issuance  (whether upon initial  issuance
               or upon transfer or exchange), and shall be executed on behalf of
               the Company by the manual or facsimile signature of its President
               or a Vice  President,  and attested to by the manual or facsimile
               signature of its Secretary or an Assistant Secretary.

     SECTION 2. EXERCISE OF A WARRANTS, DURATION AND A WARRANT PRICE. Subject to
the  provisions  of this  Agreement,  each  registered  Holder  of one or more A
Warrant  certificates  shall have the right, which may be exercised as in such A
Warrant  certificates  expressed,  to purchase from the Company (and the Company
shall issue and sell to such  registered  Holder) the number of shares of Common
Stock to which the A Warrants  represented by such  certificates are at the time
entitled hereunder.

     Each A Warrant not  exercised by its A  Expiration  Date shall become void,
and all rights thereunder and all rights in respect thereof under this Agreement
shall cease on such date.

                                        1
<PAGE>
     A  Warrants  may  be  exercised  by  the   surrender  of  the   certificate
representing such A Warrants to the Company, at the office of the Company,  with
the  subscription  farm set forth duly  executed and properly  endorsed with the
signatures properly guaranteed, and upon payment in full to the Company of the A
Warrant Price (as defined  hereinafter) for the number of shares of Common Stock
as to which the A Warrant is  exercised.  Such A Warrant  Price shall be paid in
full in cash,  or by  certified  check of bank draft  payable  in United  States
currency to the order of the Company.

     The price  per share of the  Common  Stack at which the A  Warrants  may be
exercised  shall be one dollar and fifty cents  ($1.50) per share with no regard
to the bid or ask  price of the stock  on,  before or after the date the  Holder
chooses to exercise the A Warrants. The A Expiration Date will be, as previously
stated in Section 1(A), December 31, 2001.

     Subject  to the  further  provisions  of this  Section  2 and of  Section 5
hereof, upon such surrender of A Warrant  certificates and payment of the of the
A  Warrant  Price  as  aforesaid,  the  Company,  shall  issue  and  cause to be
delivered,  with all  reasonable  dispatch to or upon the  written  order of the
registered  Holder  of  such A  Warrants  and in  such  name  or  names  as such
registered Holder may designate, a certificate or certificates for the number of
securities  so  purchased  upon the exercise of such A Warrants,  together  with
cash, as provided in Section 9 of this Agreement,  in respect of any fraction of
a share or security otherwise issuable upon such surrender. All shares of Common
Stock issued,  upon the exercise of A Warrants  shall be validly  issued,  fully
paid and non-assessable.

     Certificates  representing  such  securities  shall be  deemed to have been
issued and any person so  designated to be named therein shall be deemed to have
become a Holder of record of such  securities as of the date of the surrender of
such A Warrants  and  payment  of the A Warrant  Price as  aforesaid;  provided,
however,  that is, at the date of  surrender  of such A Warrants  and payment of
such A  Warrant  Price,  the  transfer  books  for the  Common  Stock  or  other
securities  purchasable  upon the exercise of such A Warrants are then exercised
shall he  issuable  as of the date on which such books  shall next be opened and
until such date the Company  shall be under no duty to deliver  any  certificate
for such  securities,  The  rights  of  purchase  represented  by each A Warrant
certificate  shall be  exercisable,  at the election of the  registered  Holders
thereof,  either as an  entirety  or from time to time for part of the number of
securities specified therein and, in the event that any A Warrant certificate is
exercised in respect of less that all of the securities specified therein at any
time  prior to the A  Expiration  Date of the A  Warrant  certificate,  a flew A
Warrant certificate or certificates will be issued to such registered Holder for
the  remaining  number  securities  specified  in the A Warrant  certificate  so
surrendered.

     SECTION 3.  COUNTERSIGNATURE  AND  RESIGNATION  The Company shall  maintain
books (the "A Warrant  Register) for the  registration  and the  registration of
transfer of the A Warrants.  Upon the  initial  issuance of the A Warrants,  the
Company  shall issue and register the A Warrants in the names of the  respective
Holders thereof. The A Warrant  certificates shall be countersigned  manually or
by  facsimile  by an officer of the Company and attested to by an officer of the
Company.

                                        2
<PAGE>
     Prior to due  presentment  for  registration  of  transfer  of any  Warrant
certificate the Company may deem and treat the person in whose name such Warrant
certificate  shall be  registered  upon the Warrant  Register  (the  "registered
Holder") as the absolute owner of such Warrant  certificate  and of each Warrant
represented thereby (notwithstanding any flotation of ownership or other writing
on the Warrant  certificate made by anyone other than the Company or the Warrant
Agent),  for the purpose of any exercise thereof,  of any distribution or notice
to the Holder thereof, and for all other purposes,  and the Company shall not be
affected by any notice to the contrary.

     SECTION 4. TRANSFER AND EXCHANGE OF WARRANTS.  The Company  shall  register
the  transfer,  from time to time, of any  outstanding  Warrant upon the warrant
Register,  upon  surrender  of  the  certificate  evidencing  such  Warrant  for
transfer,  properly endorsed with signatures properly guaranteed and accompanied
by appropriate  instructions for transfer. Upon any such transfer, a new Warrant
certificate  representing an equal aggregate  number of Warrants shall be issued
to the transferee and the surrendered  Warrant  certificate shall be canceled by
the Company.

     Warrant  certificates  may he  surrendered  to the Company  together with a
written request for exchange,  and thereupon the Company shall issue in exchange
therefor one or more new Warrant  certificates  as  requested by the  registered
Holder of the Warrant  certificate or certificates so surrendered,  representing
an equal aggregate number of Warrants.

     SECTION 5.  PAYMENT OF TAXES.  The Company will pay any  documentary  stamp
taxes  attributable  to the  initial  issuance  of the  shares of  Common  Stock
issuable upon the exercise of Warrants; provided, however, the Company shall not
be  required  to pay any tax or taxes  which may be  payable  in  respect of any
transfer  involved in the issuance or delivery of any certificates for shares of
Common  Stock in a name other than  registered  Holder of Warrants in respect of
which are issued, and in such case the Company shall not be required to issue or
deliver  any for  shares  of  Common  Stock  or any  Warrant  until  the  person
requesting  the same has paid the amount of such tax or has  established  to the
Company's satisfaction that such tax has been paid.

     SECTION  6.  MUTILATED  OR  MISSING  WARRANTS.  in case any of the  Warrant
certificates shall be mutilated,  lost, stolen or destroyed,  the Company may in
its discretion issue a new Warrant certificate,  and THE COMPANY IN EXCHANGE AND
SUBSTITUTION   THEREFOR  AND  UPON   CANCELLATION   OF  THE  MUTILATED   WARRANT
CERTIFICATE,  OR IN LIEU OF AND  SUBSTITUTION  FOR THE WARRANT  CERTIFICATE LOST
STOLEN OR DESTROYED,  shall  countersign  and deliver a new Warrant  certificate
representing  an equal  aggregate  number of Warrants,  but only upon receipt of
evidence  satisfactory to the Company of such loss, theft or destruction of such
Warrant certificate and reasonable indemnity, it requested, also satisfactory to
them. Applicants for such substitute Warrant certificates shall also comply with
such other reasonable  conditions and pay such reasonable charges as the Company
may prescribe.

     SECTION 7. RESERVATION OF COMMON STOCK.  There have been reserved,  and the
Company shall at all times keep  reserved,  out of the  authorized  and unissued
shares  of  Common  Stock,  a number of shares  sufficient  to  provide  for the
exercise of the rights of purchase represented by the Warrants then outstanding,
and the transfer agent for the Common Stock, and every subsequent transfer agent
for any shares of the Company's  capital stock issuable upon the exercise of any

                                        3
<PAGE>
of the rights of  purchase  aforesaid,  are hereby  irrevocably  authorized  and
directed at all times to reserve such number of authorized  and unissued  shares
as shall be requisite for such purpose.

     SECTION  8.  ADJUSTMENT  OF  WARRANT  PRICE AND  NUMBER OF SHARES OF COMMON
STOCK.  The number and kind of securities  purchasable  upon the exercise of the
Warrants and the Warrant Price shall be subject to adjustment  from time to time
upon the happening of certain events, as follows:

          8.1 ADJUSTMENTS. The number of shares of Common Stock purchasable upon
the  exercise  of each  Warrant  arid the  Warrant  Price  shall be  subject  to
adjustment as follows:

          (a) In case the Company  shall (i) pay a dividend  in Common  Stock or
     make a distribution in Common Stock, (ii) subdivide its outstanding  Common
     Stock,  (iii) combine its outstanding Common Stuck into a smaller number of
     shares of Common Stock,  or (iv) issue, by  reclassification  of its Common
     stock,  other  securities  of the  Company,  the number of shares of Common
     Stock  purchasable  upon  exercise of a Warrant  immediately  prior thereto
     shall be  adjusted  so that the Holder of a Warrant  shall be  entitled  to
     receive the kind and number of shares of Common  Stock or other  securities
     of the  Company  which  such  Holder  would  have  owned or would have been
     entitled to receive  immediately  after the  happening of any of the events
     described  above, had the Warrant been exercised  immediately  prior to the
     happening  of such  event or any  record  date with  respect  thereto.  Any
     adjustment made pursuant to this subsection  8.1(a) shall become  effective
     immediately  after the  effective  date of such  event  retroactive  to the
     record date, if any, for such event.

          (b) In case the  Company  shall  issue  rights,  options,  Warrants or
     convertible  securities to all or  substantially  all holders of its Common
     Stock, without any charge to such holders,  entitling them to subscribe for
     or purchase  Common Stock at a price per share which is lower at the record
     date  mentioned  below than the then  Current  Market  Price (as defined in
     Section  9  hereof),  the  number of  shares  of  Common  Stock  thereafter
     purchasable  upon the  exercise  of each  Warrant  shall be  determined  by
     multiplying  the number of shares of Common Stock  theretofore  purchasable
     upon exercise of a Warrant by a fraction,  of which the numerator  shall be
     the number of shares of Common Stock  outstanding  immediately prior to the
     issuance of such rights,  options.  Warrants or convertible securities plus
     the number of additional shares of Common Stock offered for subscription or
     purchase,  and of which the  denominator  shall be the  number of shares of
     Common Stock outstanding  immediately prior to the issuance of such rights,
     options, Warrants or convertible securities plus the number of shares which
     the aggregate  offering  price of the total number of shares  offered would
     purchase  at such  Current  Market  Price.  Such  adjustment  shall be made
     whenever  such rights,  options.  Warrants or  convertible  securities  are
     issued,  and shall become  effective  immediately  and  retroactive  to the
     record date for the determination of stockholders  entitled to receive such
     rights, options. Warrants or convertible securities.

                                        4
<PAGE>
          (c) In case the Company shall distribute to all or  substantially  all
     holders  of its  Common  Stock,  evidences  of its  indebtedness  or assets
     (excluding  cash  dividends  or  distributions  cut of earnings) or rights,
     options,  Warrants  or  convertible  securities  containing  the  right  to
     subscribe  for or purchase  Common Stock  (excluding  those  referred to in
     subsection 8.1(b) above),  then in each case the number of shares of Common
     Stock  thereafter  purchasable  upon the exercise of each Warrant  shall be
     determined by multiplying the number of shares of Common Stock  theretofore
     purchasable  upon  exercise  of such  Warrant by a  fraction,  of which the
     numerator  shall  be the  then  Current  Market  Price  on the date of such
     distribution,  and of which the  denominator  shall be such Current  Market
     Price on such date minus the then fair  value of the  portion of the assets
     or evidences of indebtedness so distributed or of such subscription rights,
     options,  Warrants or convertible  securities applicable to one share. Such
     adjustment  shall be made whenever any such  distribution is made and shall
     become effective on the date of distribution retroactive to the record date
     for  the   determination   of   stockholders   entitled  to  receive   such
     distribution.

          (d) No adjustment in the number of shares of Common Stock  purchasable
     pursuant to the Warrants  shall be required  unless such  adjustment  would
     require an  increase  or  decrease of at least one percent in the number of
     shares of Common Stock then  purchasable upon the exercise of the Warrants;
     provided,  however, that any adjustments which by reason of this subsection
     8.1(d) are not required to be made immediately shall be carried forward and
     taken into account in any subsequent adjustment.

          (e) Whenever the number of shares of Common Stock purchasable upon the
     exercise  of a Warrant is adjusted as herein  provided,  the Warrant  Price
     payable upon exercise of the Warrant shall be adjusted by multiplying  such
     Warrant Price immediately prior to such adjustment by a fraction,  of which
     the  numerator  shall he the number of shares of Common  Stock  purchasable
     upon the exercise of such Warrant immediately prior to such adjustment, and
     of which the  denominator  shall be the number of shares of Common Stock so
     purchasable immediately thereafter.

          8.2 NO  ADJUSTMENT  FOR  DIVIDENDS.  Except as provided in Section 8.1
hereof,  no  adjustment  in respect of any  dividends  or  distributions  out of
earnings  shall be made  during the term of a Warrant or upon the  exercise of a
Warrant.

          8.3   PRESERVATION   OF   PURCHASE   RIGHTS   UPON   RECLASSIFICATION,
CONSOLIDATION,  ETC. In case of any  consolidation of the Company with or merger
of the Company into another  corporation or in case of any sale or conveyance to
another  corporation  of the  property,  assets or business of the Company as an
entirety or  substantially  as an  entirety,  the Company or such  successor  or
purchasing  corporation,  as the case may be, shall  execute with the Company an
agreement  that the  registered  holders  of the  Warrants  shall have the right
thereafter,  upon payment of the Warrant  Price in effect  immediately  prior to
such action, to purchase,  upon exercise of each Warrant, the kind and amount of
shares and other  securities and property which it would have owned or have been
entitled to receive after the happening of such  consolidation,  merger, sale or
conveyance had each Warrant been exercised  immediately prior to such action. In
the event of a merger described in Section  368(a)(2)(E) of the Internal Revenue
Code of 1986, as amended, in which the Company is the surviving corporation, the

                                        5
<PAGE>
right to purchase  shares of Common Stock under the Warrants shall  terminate on
the date of such merger and thereupon  the Warrants  shall become null and void,
but  only if the  controlling  corporation  shall  agree to  substitute  for the
Warrants its warrants  which  entitle the holders  thereof to purchase upon this
exercise the kind and amount of shares and other  securities  and property which
they  could  have  owned or been  entitled  to  receive  had the  Warrants  been
exercised  immediately prior to such merger. Any such agreements  referred to in
this  subsection  8.3 shall  provide for  adjustments,  which shall be as nearly
equivalent as may be  practicable to the  adjustments  provided for in section 9
hereof.  The  provisions  of  this  subsection  8.3  shall  similarly  apply  to
successive consolidations, mergers, sales or conveyances.

     SECTION 9. FRACTIONAL INTERESTS. The Company shall not be required to issue
fractional shares of common Stock on the exercise of a Warrant.  If any fraction
of a share of Common Stock would,  except for the  provisions of this Section 9,
be issuable on the exercise of a Warrant (or  specified  portion  thereof),  the
Company  shall in lieu  thereof pay an amount in cash equal to the then  Current
Market Price  multiplied by such fraction.  For purposes of this Agreement,  the
term "Current  Market Price" shall mean (i) if the Common Stock is traded in the
over-the-counter market and flat in the NASDAQ National Market System nor on any
national securities exchange, the average of the per share closing bid prices of
the  Common  Stock on the  thirty  (30)  consecutive  trading  days  immediately
preceding the date in question, as reported by NASDAQ or an equivalent generally
accepted reporting service,  or (ii) if the Common Stock is traded in the NASDAQ
National Market System or on a national securities exchange, the average for the
thirty (30) consecutive trading days immediately  preceding the date in question
of the daily per share closing prices of the Common Stock in the NASDAQ National
Market system or on the principal  stock exchange on which it is listed,  as the
case may be. For purposes of clause (i) above, if trading in the Common Stock is
not  reported by NASDAQ,  the bid price  referred to in said clause shall be the
lowest bid price as reported by National  Quotation  Bureau,  Incorporated.  The
closing  price  referred to in clause (ii) above shall be the last reported sale
price or, in the case no such reported sale takes place on such day, the average
of the  reported  closing  bid and asked  prices,  in either  case in the NASDAQ
National  Market  System or on the  national  securities  exchange  on which the
Common Stock is then listed.

     SECTION 10. RIGHTS AS  WARRANTHOLDERS.  Nothing contained in this Agreement
or in any of the  Warrants  shall be construed  as  conferring  upon the holders
thereof,  as such, any of the rights of stockholders of the Company,  including,
without limitation,  the right to receive dividends or other  distributions,  to
exercise any  preemptive  rights,  to vote or to consent or to receive notice as
stockholders  in respect of the  meetings  of  stockholders  or the  election of
directors of the Company or any other  matter.  Anything  herein to the contrary
notwithstanding,  the Company shall cause copies of all financial statements and
reports,  proxy  statements  and  other  documents  as  it  shall  send  to  its
stockholders  to be sent by the  same  class  mail as sent to its  stockholders,
postage  prepaid,  on the  date of the  mailing  to such  stockholders,  to each
registered  holder of Warrants at his address  appearing on the Warrant Register
as of the record date for the determination of the stockholders entitled to such
documents.

                                        6
<PAGE>
     SECTION  11.  NOTICES.  All  notices,  requests  and  other  communications
pursuant to this Agreement shall be in writing and shall be  sufficiently  given
or made when delivered or mailed by first class mail, postage prepaid, addressed
as follows:

          (A)  if to the Company:

               National Scientific Corporation
               4455 East Camelback Road
               Suite 5150
               Phoenix, Arizona 55018
               Attention: President

          (B)  if to the registered holder of a Warrant,  to the address of such
          holder as shown in the Warrant Register.

     SECTION 12.  SUPPLEMENTS AND AMENDMENTS.  The Company may from time to time
supplement  or amend this  Agreement  without  the  approval  of any  holders of
Warrants  in  order  to cure any  ambiguity  or to  correct  or  supplement  any
provision contained herein which may be defective or inconsistent with any other
provision  herein,  or to make any other  provisions  in regard  to  matters  or
questions  arising  hereunder  which the Company may deem necessary or desirable
and which shall not be  inconsistent  with the  provisions of the  Warrants,  or
which  shall not  adversely  affect the  interests  of the  holders of  Warrants
(including  reducing the Warrant Price or extending the redemption or expiration
date).

     SECTION 18. SUCCESSORS.  All the covenants and provisions of this Agreement
by or for the benefit of the Company or the  registered  holders of the Warrants
shall bind and inure to the benefit of their  respective  successors and assigns
hereunder.

     SECTION 19.  GOVERNING LAW. This Agreement shall be deemed to be a contract
made  under  the  laws of the  State  of  Texas  and for all  purposes  shall be
construed in accordance with the laws of said State.

     SECTION 20. BENEFITS OF THIS AGREEMENT.  Nothing in this Agreement shall he
construed  to give to any person or  corporation  other than the Company and the
registered holders of the Warrants any legal or equitable right, remedy or claim
under this Agreement. This Agreement shall be for the sole and exclusive benefit
of the Company and the registered Holders of the Warrants.

     SECTION 21.  COUNTERPARTS.  This Agreement may be executed in  counterparts
and  each  of such  counterparts  shall  for all  purposes  be  deemed  to be an
original,  and all such counterparts  shall together  constitute hut one and the
same instrument.

     SECTION 22. DESCRIPTIVE  HEADINGS.  The descriptive headings of the several
Sections of this  Agreement  are  inserted  for  convenience  only and shall not
control or affect the moaning or construction of any of the provisions hereof.

                                        7
<PAGE>
     IN WITNESS  WHEREOF,  the parties  have caused  this  Agreement  to be duly
executed, as of the day and year first above written.


                                        NATIONAL SCIENTIFIC CORPORATION


                                        By:
                                            ------------------------------------
                                            President



                                        By:
                                            ------------------------------------
                                            Secretary

                                        8
<PAGE>
WARRANT CERTIFICATE NO.__________


               CLASS A WARRANT TO PURCHASE SHARES OF COMMON STOCK
                         NATIONAL SCIENTIFIC CORPORATION

                INCORPORATED UNDER THE LAWS OF THE STATE OF TEXAS

     This certifies  that,  for value received  ________________________________
the registered holder hereof or assigns (the "Holder"),  is entitled to purchase
from NATIONAL SCIENTIFIC  CORPORATION,  a Texas corporation (the "Company"),  at
any time  after the date of this  Warrant  Certificate  and  before  5:00  p.m.,
Arizona time,  on December 31, 2000, at a purchase  price of $1.00 (the "Warrant
Price") per share, one hundred thousand  (100,000) shares of Common Stack of the
Company (the "Shares").  The number of Shares  purchasable upon exercise of each
Warrant  evidenced  hereby and the  Warrant  Price per Share shall be subject to
adjustment from time to time as set forth in the Warrant  Agreement  referred to
below.

     The  Warrants  evidence  hereby  may be  exercised  in  whole or in part by
presentation  of the Warrant  Certificate  with the Purchase  Form duly executed
(with a signature  guarantee)  and  simultaneous  payment of the  Warrant  Price
(subject to adjustment) at the principal office in Phoenix,  Arizona. Payment of
such price  shall be made at the  option of the  Holder in cash or by  certified
check or bank draft, all as provided in the Warrant Agreement.

     The Warrants evidenced hereby are part of a duly authorized issue of Common
Stock  Purchase  Warrants and are issued under and in accordance  with a Warrant
Agreement dated March 15, 1998 and are subject to terms and provisions contained
in such Warrant Agreement, to all of which the Holder of the Warrant Certificate
by acceptance  hereof consents.  A copy of the Warrant Agreement may be obtained
for inspection by the Holder hereof upon written request to the Company.

     Upon any partial exercise of the Warrants evidenced hereby,  there shall be
countersigned  and issued to the Holder a new Warrant  Certificate in respect of
the  Shares  as to which  the  Warrants  evidenced  hereby  shall  not have been
exercised.  This  Warrant  Certificate  may be  exchanged  at the  office of the
Company by surrender  of this  Warrant  Certificate  properly  endorsed  (with a
signature  guarantee) either separately or in combination with one or more other
Warrants for one or more new Warrants to purchase the same  aggregate  number of
Shares as here  evidenced by the Warrant or Warrants  exchanged.  No  fractional
Shares will be issued upon the exercise of rights to purchase hereunder, but the
Company  shall pay the cash value of any  fraction  upon the  exercise of one or
more Warrants.  The Warrants  evidenced hereby are transferable at the office of
the  Company  in the  manner and  subject  to the  limitations  set forth in the
Warrant Agreement.
<PAGE>
     The Holder hereof may be treated by the Company all other  parsons  dealing
with this Warrant  Certificate as the absolute owner hereof for all purposes and
as the person entitled to exercise the rights represented  hereby, any notice to
the contrary notwithstanding,  and until such transfer is entered an such books,
the Company may treat the Holder hereof as the owner for all purposes.

     This Warrant  Certificate  does not entitle the Holder hereof to any of the
rights of a stockholder of the Company.


Dated:                                  NATIONAL SCIENTIFIC CORPORATION
      -----------------------

                                        By:
                                            ------------------------------------
                                            President


ATTEST:


- -----------------------------
Secretary
<PAGE>
                         NATIONAL SCIENTIFIC CORPORATION
                                  PURCHASE FORM

                         National Scientific Corporation
                      4455 East Camelback Road, Suite El GO
                             Phoenix, Arizona 85018

     The undersigned hereby irrevocably elects to exercise the right of purchase
represented by the within Warrant  Certificate for, and to purchase  thereunder,
_________________ Shares of Common Stock provided for therein, and requests that
certificates for such Shares be issued in the name of:

________________________________________________________________________________

________________________________________________________________________________
(Please Print or Type Name, Address and Social Security Number)

and,  if  said  number  of  Shares  shall  riot be all  the  Shares  purchasable
hereunder.  that a new  Warrant  Certificate  for  the  balance  of  the  Shares
purchasable  under the within  Warrant  Certificate be registered in the name of
the  undersigned  Holder or his Assignee as below indicated and delivered to the
address stated below.

                                                       Dated:___________________
Name of Holder or Assignee:

___________________________________
(Please Print)

Address:

________________________________________________________________________________

________________________________________________________________________________


Signature:

___________________________________

Note: The  above  signature must correspond with the name as it appears upon the
      face  of  the  within  Warrant  Certificate  in  every particular, without
      alteration  or  enlargement  or any change whatever, unless these Warrants
      have been assigned.

Signature Guaranteed:

___________________________________
(Signature  must be guaranteed  by a bank or trust  company  having an office or
correspondent  in  the  United  States  or  by a  member  firm  of a  registered
securities exchange or the National Association of Securities Dealers, Inc.)
<PAGE>
                                   ASSIGNMENT

                 (To Be Signed Only Upon Assignment Of Warrants)


     FOR VALUE  RECEIVED,  the undersigned  hereby sells,  assigns and transfers
unto:

________________________________________________________________________________

________________________________________________________________________________
(Name and Address of Assignee Must Be Printed or Typewritten)

the  within   Warrants,   hereby   irrevocably   constituting   and   appointing
___________________,  Attorney,  to transfer  said  Warrants on the books of the
Company, with full power of substitution in the premises.


Dated: ____________________________


___________________________________
Signature of Registered Holder

Note: The  signature  on  this  Assignment  must  correspond with the name as it
      appears  upon  the  face  of  the  within  Warrant  Certificate  in  every
      particular, without alteration or enlargement or any change whatever.


Signature Guaranteed:

___________________________________
(Signature  must be guaranteed  by a bank or trust  company  having an office or
correspondent  in  the  United  States  or  by a  member  firm  of a  registered
securities exchange or the National Association of Securities Dealers, Inc.)

                                WARRANT AGREEMENT

                         NATIONAL SCIENTIFIC CORPORATION

     THIS AGREEMENT  (the  "Agreement"),  dated as of 1998, is between  NATIONAL
SCIENTIFIC CORPORATION (the "Company") and (the "Holder").

     WHEREAS,  in  conjunction  with an  offering of up to fifty (50) units (the
("Units"),  each Unit consisting of one thousand (1,000) shares of the Company's
convertible preferred stock, par value $0.10 par value, (the "Preferred Stock"),
and one hundred  thousand  (100,000) Class A Common Stock Purchase  Warrants ("A
Warrants or  Warrants"),  the  Company and the Holder  desire to enter into this
Agreement governing the terms of the A Warrants.

     NOW, THEREFORE,  in consideration of the promises and the mutual agreements
herein set, the parties agree as follows:

     SECTION 1. A WARRANTS AND FORM OF A WARRANT CERTIFICATES.

          (A)  Each A  Warrant  shall  entitle  the  Holder  of the  certificate
               representing such A Warrant to purchase upon the exercise thereof
               one  (1)  share  of  Common  Stock,  subject  to the  adjustments
               provided  for in Section 8 hereof,  at any time  after  issuance,
               until December 31, 2000 ("A Expiration Date") with respect to the
               A Warrants.

          (B)  The A Warrant  certificates shall be in registered form only. The
               text of the A Warrant  certificate  and the form of  election  to
               exercise an A Warrant shall be  substantially  in the form of the
               exhibit  attached  hereto.  Each A Warrant  certificate  shall be
               dated as of the date of issuance  (whether upon initial  issuance
               or upon transfer or exchange), and shall be executed on behalf of
               the Company by the manual or facsimile signature of its President
               or a Vice  President,  and attested to by the manual or facsimile
               signature of its Secretary or an Assistant Secretary.

     SECTION 2. EXERCISE OF A WARRANTS, DURATION AND A WARRANT PRICE. Subject to
the  provisions  of this  Agreement,  each  registered  Holder  of one or more A
Warrant  certificates  shall have the right, which may be exercised as in such A
Warrant  certificates  expressed,  to purchase from the Company (and the Company
shall issue and sell to such  registered  Holder) the number of shares of Common
Stock to which the A Warrants  represented by such  certificates are at the time
entitled hereunder.

     Each A Warrant not  exercised by its A  Expiration  Date shall become void,
and all rights thereunder and all rights in respect thereof under this Agreement
shall cease on such date.

                                        1
<PAGE>
     A  Warrants  may  be  exercised  by  the   surrender  of  the   certificate
representing such A Warrants to the Company, at the office of the Company,  with
the  subscription  farm set forth duly  executed and properly  endorsed with the
signatures properly guaranteed, and upon payment in full to the Company of the A
Warrant Price (as defined  hereinafter) for the number of shares of Common Stock
as to which the A Warrant is  exercised.  Such A Warrant  Price shall be paid in
full in cash,  or by  certified  check of bank draft  payable  in United  States
currency to the order of the Company.

     The price  per share of the  Common  Stack at which the A  Warrants  may be
exercised shall be $1.00 per share with no regard to the bid or ask price of the
stock  on,  before  or after  the date the  Holder  chooses  to  exercise  the A
Warrants.  The A Expiration Date will be, as previously  stated in Section 1(A),
December 31, 2000.

     Subject  to the  further  provisions  of this  Section  2 and of  Section 5
hereof, upon such surrender of A Warrant  certificates and payment of the of the
A  Warrant  Price  as  aforesaid,  the  Company,  shall  issue  and  cause to be
delivered,  with all  reasonable  dispatch to or upon the  written  order of the
registered  Holder  of  such A  Warrants  and in  such  name  or  names  as such
registered Holder may designate, a certificate or certificates for the number of
securities  so  purchased  upon the exercise of such A Warrants,  together  with
cash, as provided in Section 9 of this Agreement,  in respect of any fraction of
a share or security otherwise issuable upon such surrender. All shares of Common
Stock issued,  upon the exercise of A Warrants  shall be validly  issued,  fully
paid and non-assessable.

     Certificates  representing  such  securities  shall be  deemed to have been
issued and any person so  designated to be named therein shall be deemed to have
become a Holder of record of such  securities as of the date of the surrender of
such A Warrants  and  payment  of the A Warrant  Price as  aforesaid;  provided,
however,  that is, at the date of  surrender  of such A Warrants  and payment of
such A  Warrant  Price,  the  transfer  books  for the  Common  Stock  or  other
securities  purchasable  upon the exercise of such A Warrants are then exercised
shall he  issuable  as of the date on which such books  shall next be opened and
until such date the Company  shall be under no duty to deliver  any  certificate
for such  securities,  The  rights  of  purchase  represented  by each A Warrant
certificate  shall be  exercisable,  at the election of the  registered  Holders
thereof,  either as an  entirety  or from time to time for part of the number of
securities specified therein and, in the event that any A Warrant certificate is
exercised in respect of less that all of the securities specified therein at any
time  prior to the A  Expiration  Date of the A  Warrant  certificate,  a flew A
Warrant certificate or certificates will be issued to such registered Holder for
the  remaining  number  securities  specified  in the A Warrant  certificate  so
surrendered.

     SECTION 3.  COUNTERSIGNATURE  AND  RESIGNATION  The Company shall  maintain
books (the "A Warrant  Register) for the  registration  and the  registration of
transfer of the A Warrants.  Upon the  initial  issuance of the A Warrants,  the
Company  shall issue and register the A Warrants in the names of the  respective
Holders thereof. The A Warrant  certificates shall be countersigned  manually or
by  facsimile  by an officer of the Company and attested to by an officer of the
Company.

                                        2
<PAGE>
     Prior to due  presentment  for  registration  of  transfer  of any  Warrant
certificate the Company may deem and treat the person in whose name such Warrant
certificate  shall be  registered  upon the Warrant  Register  (the  "registered
Holder") as the absolute owner of such Warrant  certificate  and of each Warrant
represented thereby (notwithstanding any flotation of ownership or other writing
on the Warrant  certificate made by anyone other than the Company or the Warrant
Agent),  for the purpose of any exercise thereof,  of any distribution or notice
to the Holder thereof, and for all other purposes,  and the Company shall not be
affected by any notice to the contrary.

     SECTION 4. TRANSFER AND EXCHANGE OF WARRANTS.  The Company  shall  register
the  transfer,  from time to time, of any  outstanding  Warrant upon the warrant
Register,  upon  surrender  of  the  certificate  evidencing  such  Warrant  for
transfer,  properly endorsed with signatures properly guaranteed and accompanied
by appropriate  instructions for transfer. Upon any such transfer, a new Warrant
certificate  representing an equal aggregate  number of Warrants shall be issued
to the transferee and the surrendered  Warrant  certificate shall be canceled by
the Company.

     Warrant  certificates  may he  surrendered  to the Company  together with a
written request for exchange,  and thereupon the Company shall issue in exchange
therefor one or more new Warrant  certificates  as  requested by the  registered
Holder of the Warrant  certificate or certificates so surrendered,  representing
an equal aggregate number of Warrants.

     SECTION 5.  PAYMENT OF TAXES.  The Company will pay any  documentary  stamp
taxes  attributable  to the  initial  issuance  of the  shares of  Common  Stock
issuable upon the exercise of Warrants; provided, however, the Company shall not
be  required  to pay any tax or taxes  which may be  payable  in  respect of any
transfer  involved in the issuance or delivery of any certificates for shares of
Common  Stock in a name other than  registered  Holder of Warrants in respect of
which are issued, and in such case the Company shall not be required to issue or
deliver  any for  shares  of  Common  Stock  or any  Warrant  until  the  person
requesting  the same has paid the amount of such tax or has  established  to the
Company's satisfaction that such tax has been paid.

     SECTION  6.  MUTILATED  OR  MISSING  WARRANTS.  in case any of the  Warrant
certificates shall be mutilated,  lost, stolen or destroyed,  the Company may in
its discretion issue a new Warrant certificate,  and THE COMPANY IN EXCHANGE AND
SUBSTITUTION   THEREFOR  AND  UPON   CANCELLATION   OF  THE  MUTILATED   WARRANT
CERTIFICATE,  OR IN LIEU OF AND  SUBSTITUTION  FOR THE WARRANT  CERTIFICATE LOST
STOLEN OR DESTROYED,  shall  countersign  and deliver a new Warrant  certificate
representing  an equal  aggregate  number of Warrants,  but only upon receipt of
evidence  satisfactory to the Company of such loss, theft or destruction of such
Warrant certificate and reasonable indemnity, it requested, also satisfactory to
them. Applicants for such substitute Warrant certificates shall also comply with
such other reasonable  conditions and pay such reasonable charges as the Company
may prescribe.

     SECTION 7. RESERVATION OF COMMON STOCK.  There have been reserved,  and the
Company shall at all times keep  reserved,  out of the  authorized  and unissued
shares  of  Common  Stock,  a number of shares  sufficient  to  provide  for the
exercise of the rights of purchase represented by the Warrants then outstanding,
and the transfer agent for the Common Stock, and every subsequent transfer agent
for any shares of the Company's  capital stock issuable upon the exercise of any

                                        3
<PAGE>
of the rights of  purchase  aforesaid,  are hereby  irrevocably  authorized  and
directed at all times to reserve such number of authorized  and unissued  shares
as shall be requisite for such purpose.

     SECTION  8.  ADJUSTMENT  OF  WARRANT  PRICE AND  NUMBER OF SHARES OF COMMON
STOCK.  The number and kind of securities  purchasable  upon the exercise of the
Warrants and the Warrant Price shall be subject to adjustment  from time to time
upon the happening of certain events, as follows:

          8.1 ADJUSTMENTS. The number of shares of Common Stock purchasable upon
the  exercise  of each  Warrant  arid the  Warrant  Price  shall be  subject  to
adjustment as follows:

          (a) In case the Company  shall (i) pay a dividend  in Common  Stock or
     make a distribution in Common Stock, (ii) subdivide its outstanding  Common
     Stock,  (iii) combine its outstanding Common Stuck into a smaller number of
     shares of Common Stock,  or (iv) issue, by  reclassification  of its Common
     stock,  other  securities  of the  Company,  the number of shares of Common
     Stock  purchasable  upon  exercise of a Warrant  immediately  prior thereto
     shall be  adjusted  so that the Holder of a Warrant  shall be  entitled  to
     receive the kind and number of shares of Common  Stock or other  securities
     of the  Company  which  such  Holder  would  have  owned or would have been
     entitled to receive  immediately  after the  happening of any of the events
     described  above, had the Warrant been exercised  immediately  prior to the
     happening  of such  event or any  record  date with  respect  thereto.  Any
     adjustment made pursuant to this subsection  8.1(a) shall become  effective
     immediately  after the  effective  date of such  event  retroactive  to the
     record date, if any, for such event.

          (b) In case the  Company  shall  issue  rights,  options,  Warrants or
     convertible  securities to all or  substantially  all holders of its Common
     Stock, without any charge to such holders,  entitling them to subscribe for
     or purchase  Common Stock at a price per share which is lower at the record
     date  mentioned  below than the then  Current  Market  Price (as defined in
     Section  9  hereof),  the  number of  shares  of  Common  Stock  thereafter
     purchasable  upon the  exercise  of each  Warrant  shall be  determined  by
     multiplying  the number of shares of Common Stock  theretofore  purchasable
     upon exercise of a Warrant by a fraction,  of which the numerator  shall be
     the number of shares of Common Stock  outstanding  immediately prior to the
     issuance of such rights,  options.  Warrants or convertible securities plus
     the number of additional shares of Common Stock offered for subscription or
     purchase,  and of which the  denominator  shall be the  number of shares of
     Common Stock outstanding  immediately prior to the issuance of such rights,
     options, Warrants or convertible securities plus the number of shares which
     the aggregate  offering  price of the total number of shares  offered would
     purchase  at such  Current  Market  Price.  Such  adjustment  shall be made
     whenever  such rights,  options.  Warrants or  convertible  securities  are
     issued,  and shall become  effective  immediately  and  retroactive  to the
     record date for the determination of stockholders  entitled to receive such
     rights, options, Warrants or convertible securities.

                                        4
<PAGE>
          (c) In case the Company shall distribute to all or  substantially  all
     holders  of its  Common  Stock,  evidences  of its  indebtedness  or assets
     (excluding  cash  dividends  or  distributions  cut of earnings) or rights,
     options,  Warrants  or  convertible  securities  containing  the  right  to
     subscribe  for or purchase  Common Stock  (excluding  those  referred to in
     subsection 8.1(b) above),  then in each case the number of shares of Common
     Stock  thereafter  purchasable  upon the exercise of each Warrant  shall be
     determined by multiplying the number of shares of Common Stock  theretofore
     purchasable  upon  exercise  of such  Warrant by a  fraction,  of which the
     numerator  shall  be the  then  Current  Market  Price  on the date of such
     distribution,  and of which the  denominator  shall be such Current  Market
     Price on such date minus the then fair  value of the  portion of the assets
     or evidences of indebtedness so distributed or of such subscription rights,
     options,  Warrants or convertible  securities applicable to one share. Such
     adjustment  shall be made whenever any such  distribution is made and shall
     become effective on the date of distribution retroactive to the record date
     for  the   determination   of   stockholders   entitled  to  receive   such
     distribution.

          (d) No adjustment in the number of shares of Common Stock  purchasable
     pursuant to the Warrants  shall be required  unless such  adjustment  would
     require an  increase  or  decrease of at least one percent in the number of
     shares of Common Stock then  purchasable upon the exercise of the Warrants;
     provided,  however, that any adjustments which by reason of this subsection
     8.1(d) are not required to be made immediately shall be carried forward and
     taken into account in any subsequent adjustment.

          (e) Whenever the number of shares of Common Stock purchasable upon the
     exercise  of a Warrant is adjusted as herein  provided,  the Warrant  Price
     payable upon exercise of the Warrant shall be adjusted by multiplying  such
     Warrant Price immediately prior to such adjustment by a fraction,  of which
     the  numerator  shall he the number of shares of Common  Stock  purchasable
     upon the exercise of such Warrant immediately prior to such adjustment, and
     of which the  denominator  shall be the number of shares of Common Stock so
     purchasable immediately thereafter.

          8.2 NO  ADJUSTMENT  FOR  DIVIDENDS.  Except as provided in Section 8.1
hereof,  no  adjustment  in respect of any  dividends  or  distributions  out of
earnings  shall be made  during the term of a Warrant or upon the  exercise of a
Warrant.

          8.3   PRESERVATION   OF   PURCHASE   RIGHTS   UPON   RECLASSIFICATION,
CONSOLIDATION,  ETC. In case of any  consolidation of the Company with or merger
of the Company into another  corporation or in case of any sale or conveyance to
another  corporation  of the  property,  assets or business of the Company as an
entirety or  substantially  as an  entirety,  the Company or such  successor  or
purchasing  corporation,  as the case may be, shall  execute with the Company an
agreement  that the  registered  holders  of the  Warrants  shall have the right
thereafter,  upon payment of the Warrant  Price in effect  immediately  prior to
such action, to purchase,  upon exercise of each Warrant, the kind and amount of
shares and other  securities and property which it would have owned or have been
entitled to receive after the happening of such  consolidation,  merger, sale or
conveyance had each Warrant been exercised  immediately prior to such action. In
the event of a merger described in Section  368(a)(2)(E) of the Internal Revenue
Code of 1986, as amended, in which the Company is the surviving corporation, the

                                        5
<PAGE>
right to purchase  shares of Common Stock under the Warrants shall  terminate on
the date of such merger and thereupon  the Warrants  shall become null and void,
but  only if the  controlling  corporation  shall  agree to  substitute  for the
Warrants its warrants  which  entitle the holders  thereof to purchase upon this
exercise the kind and amount of shares and other  securities  and property which
they  could  have  owned or been  entitled  to  receive  had the  Warrants  been
exercised  immediately prior to such merger. Any such agreements  referred to in
this  subsection  8.3 shall  provide for  adjustments,  which shall be as nearly
equivalent as may be  practicable to the  adjustments  provided for in section 9
hereof.  The  provisions  of  this  subsection  8.3  shall  similarly  apply  to
successive consolidations, mergers, sales or conveyances.

     SECTION 9. FRACTIONAL INTERESTS. The Company shall not be required to issue
fractional shares of common Stock on the exercise of a Warrant.  If any fraction
of a share of Common Stock would,  except for the  provisions of this Section 9,
be issuable on the exercise of a Warrant (or  specified  portion  thereof),  the
Company  shall in lieu  thereof pay an amount in cash equal to the then  Current
Market Price  multiplied by such fraction.  For purposes of this Agreement,  the
term "Current  Market Price" shall mean (i) if the Common Stock is traded in the
over-the-counter market and flat in the NASDAQ National Market System nor on any
national securities exchange, the average of the per share closing bid prices of
the  Common  Stock on the  thirty  (30)  consecutive  trading  days  immediately
preceding the date in question, as reported by NASDAQ or an equivalent generally
accepted reporting service,  or (ii) if the Common Stock is traded in the NASDAQ
National Market System or on a national securities exchange, the average for the
thirty (30) consecutive trading days immediately  preceding the date in question
of the daily per share closing prices of the Common Stock in the NASDAQ National
Market system or on the principal  stock exchange on which it is listed,  as the
case may be. For purposes of clause (i) above, if trading in the Common Stock is
not  reported by NASDAQ,  the bid price  referred to in said clause shall be the
lowest bid price as reported by National  Quotation  Bureau,  Incorporated.  The
closing  price  referred to in clause (ii) above shall be the last reported sale
price or, in the case no such reported sale takes place on such day, the average
of the  reported  closing  bid and asked  prices,  in either  case in the NASDAQ
National  Market  System or on the  national  securities  exchange  on which the
Common Stock is then listed.

     SECTION 10. RIGHTS AS  WARRANTHOLDERS.  Nothing contained in this Agreement
or in any of the  Warrants  shall be construed  as  conferring  upon the holders
thereof,  as such, any of the rights of stockholders of the Company,  including,
without limitation,  the right to receive dividends or other  distributions,  to
exercise any  preemptive  rights,  to vote or to consent or to receive notice as
stockholders  in respect of the  meetings  of  stockholders  or the  election of
directors of the Company or any other  matter.  Anything  herein to the contrary
notwithstanding,  the Company shall cause copies of all financial statements and
reports,  proxy  statements  and  other  documents  as  it  shall  send  to  its
stockholders  to be sent by the  same  class  mail as sent to its  stockholders,
postage  prepaid,  on the  date of the  mailing  to such  stockholders,  to each
registered  holder of Warrants at his address  appearing on the Warrant Register
as of the record date for the determination of the stockholders entitled to such
documents.

                                        6
<PAGE>
     SECTION  11.  NOTICES.  All  notices,  requests  and  other  communications
pursuant to this Agreement shall be in writing and shall be  sufficiently  given
or made when delivered or mailed by first class mail, postage prepaid, addressed
as follows:


          (A)  if to the Company:

               National Scientific Corporation
               4455 East Camelback Road
               Suite 5150
               Phoenix, Arizona 55018
               Attention: President

          (B)  if to the registered holder of a Warrant,  to the address of such
          holder as shown in the Warrant Register.

     SECTION 12.  SUPPLEMENTS AND AMENDMENTS.  The Company may from time to time
supplement  or amend this  Agreement  without  the  approval  of any  holders of
Warrants  in  order  to cure any  ambiguity  or to  correct  or  supplement  any
provision contained herein which may be defective or inconsistent with any other
provision  herein,  or to make any other  provisions  in regard  to  matters  or
questions  arising  hereunder  which the Company may deem necessary or desirable
and which shall not be  inconsistent  with the  provisions of the  Warrants,  or
which  shall not  adversely  affect the  interests  of the  holders of  Warrants
(including  reducing the Warrant Price or extending the redemption or expiration
date).

     SECTION 18. SUCCESSORS.  All the covenants and provisions of this Agreement
by or for the benefit of the Company or the  registered  holders of the Warrants
shall bind and inure to the benefit of their  respective  successors and assigns
hereunder.

     SECTION 19.  GOVERNING LAW. This Agreement shall be deemed to be a contract
made  under  the  laws of the  State  of  Texas  and for all  purposes  shall be
construed in accordance with the laws of said State.

     SECTION 20. BENEFITS OF THIS AGREEMENT.  Nothing in this Agreement shall he
construed  to give to any person or  corporation  other than the Company and the
registered holders of the Warrants any legal or equitable right, remedy or claim
under this Agreement. This Agreement shall be for the sole and exclusive benefit
of the Company and the registered Holders of the Warrants.

     SECTION 21.  COUNTERPARTS.  This Agreement may be executed in  counterparts
and  each  of such  counterparts  shall  for all  purposes  be  deemed  to be an
original,  and all such counterparts  shall together  constitute hut one and the
same instrument.

     SECTION 22. DESCRIPTIVE  HEADINGS.  The descriptive headings of the several
Sections of this  Agreement  are  inserted  for  convenience  only and shall not
control or affect the moaning or construction of any of the provisions hereof.

                                        7
<PAGE>
     IN WITNESS  WHEREOF,  the parties  have caused  this  Agreement  to be duly
executed, as of the day and year first above written.


                                        NATIONAL SCIENTIFIC CORPORATION


                                        By:
                                            ------------------------------------
                                            President


                                        By:
                                            ------------------------------------
                                            Secretary

                                        8
<PAGE>
WARRANT CERTIFICATE NO.__________


               CLASS A WARRANT TO PURCHASE SHARES OF COMMON STOCK
                         NATIONAL SCIENTIFIC CORPORATION

                INCORPORATED UNDER THE LAWS OF THE STATE OF TEXAS

     This certifies  that,  for value received  ________________________________
the registered holder hereof or assigns (the "Holder"),  is entitled to purchase
from NATIONAL SCIENTIFIC  CORPORATION,  a Texas corporation (the "Company"),  at
any time  after the date of this  Warrant  Certificate  and  before  5:00  p.m.,
Arizona time, on December 31, 2001, at a purchase  price of one dollar and fifty
cents ($1.50) (the "Warrant Price") per share, fifty thousand (50,000) shares of
Common Stack of the Company  (the  "Shares").  The number of Shares  purchasable
upon exercise of each Warrant  evidenced  hereby and the Warrant Price per Share
shall be subject  to  adjustment  from time to time as set forth in the  Warrant
Agreement referred to below.

     The  Warrants  evidence  hereby  may be  exercised  in  whole or in part by
presentation  of the Warrant  Certificate  with the Purchase  Form duly executed
(with a signature  guarantee)  and  simultaneous  payment of the  Warrant  Price
(subject to adjustment) at the principal office in Phoenix,  Arizona. Payment of
such price  shall be made at the  option of the  Holder in cash or by  certified
check or bank draft, all as provided in the Warrant Agreement.

     The Warrants evidenced hereby are part of a duly authorized issue of Common
Stock  Purchase  Warrants and are issued under and in accordance  with a Warrant
Agreement  dated  __________________________,  1999 and are subject to terms and
provisions  contained in such Warrant  Agreement,  to all of which the Holder of
the Warrant  Certificate by acceptance  hereof  consents.  A copy of the Warrant
Agreement  may be obtained  for  inspection  by the Holder  hereof upon  written
request to the Company.

     Upon any partial exercise of the Warrants evidenced hereby,  there shall be
countersigned  and issued to the Holder a new Warrant  Certificate in respect of
the  Shares  as to which  the  Warrants  evidenced  hereby  shall  not have been
exercised.  This  Warrant  Certificate  may be  exchanged  at the  office of the
Company by surrender  of this  Warrant  Certificate  properly  endorsed  (with a
signature  guarantee) either separately or in combination with one or more other
Warrants for one or more new Warrants to purchase the same  aggregate  number of
Shares as here  evidenced by the Warrant or Warrants  exchanged.  No  fractional
Shares will be issued upon the exercise of rights to purchase hereunder, but the
Company  shall pay the cash value of any  fraction  upon the  exercise of one or
more Warrants.  The Warrants  evidenced hereby are transferable at the office of
the  Company  in the  manner and  subject  to the  limitations  set forth in the
Warrant Agreement.
<PAGE>
     The Holder hereof may be treated by the Company all other  parsons  dealing
with this Warrant  Certificate as the absolute owner hereof for all purposes and
as the person entitled to exercise the rights represented  hereby, any notice to
the contrary notwithstanding,  and until such transfer is entered an such books,
the Company may treat the Holder hereof as the owner for all purposes.

     This Warrant  Certificate  does not entitle the Holder hereof to any of the
rights of a stockholder of the Company.


Dated:                                  NATIONAL SCIENTIFIC CORPORATION
      -----------------------

                                        By:
                                            ------------------------------------
                                            President

ATTEST:

- -----------------------------
Secretary
<PAGE>
                         NATIONAL SCIENTIFIC CORPORATION
                                  PURCHASE FORM

                         National Scientific Corporation
                      4455 East Camelback Road, Suite El GO
                             Phoenix, Arizona 85018

     The undersigned hereby irrevocably elects to exercise the right of purchase
represented by the within Warrant  Certificate for, and to purchase  thereunder,
______________  Shares of Common Stock  provided for therein,  and requests that
certificates for such Shares be issued in the name of:

________________________________________________________________________________

________________________________________________________________________________
(Please Print or Type Name, Address and Social Security Number)

and,  if  said  number  of  Shares  shall  riot be all  the  Shares  purchasable
hereunder.  that a new  Warrant  Certificate  for  the  balance  of  the  Shares
purchasable  under the within  Warrant  Certificate be registered in the name of
the  undersigned  Holder or his Assignee as below indicated and delivered to the
address stated below.

                                                       Dated: __________________
Name of Holder or Assignee:

___________________________________
(Please Print)

Address:

________________________________________________________________________________

________________________________________________________________________________


Signature:

___________________________________


Note: The  above  signature must correspond with the name as it appears upon the
      face  of  the  within  Warrant  Certificate  in  every particular, without
      alteration  or  enlargement  or any change whatever, unless these Warrants
      have been assigned.

Signature Guaranteed:

___________________________________
(Signature  must be guaranteed  by a bank or trust  company  having an office or
correspondent  in  the  United  States  or  by a  member  firm  of a  registered
securities exchange or the National Association of Securities Dealers, Inc.)
<PAGE>
                                   ASSIGNMENT

                 (To Be Signed Only Upon Assignment Of Warrants)

     FOR VALUE  RECEIVED,  the undersigned  hereby sells,  assigns and transfers
unto:

________________________________________________________________________________

________________________________________________________________________________
(Name and Address of Assignee Must Be Printed or Typewritten)

the  within   Warrants,   hereby   irrevocably   constituting   and   appointing
_____________________,  Attorney,  to transfer said Warrants on the books of the
Company, with full power of substitution in the premises.


Dated: ____________________________


___________________________________
Signature of Registered Holder

Note: The  signature  on  this  Assignment  must  correspond with the name as it
      appears  upon  the  face  of  the  within  Warrant  Certificate  in  every
      particular, without alteration or enlargement or any change whatever.

Signature Guaranteed:

___________________________________
(Signature  must be guaranteed  by a bank or trust  company  having an office or
correspondent  in  the  United  States  or  by a  member  firm  of a  registered
securities exchange or the National Association of Securities Dealers, Inc.)

                             TARGUN PROPERTIES, INC.

                            LEASE & SERVICE AGREEMENT

This  agreement  is  made  on  this  21st  day of  August  1998  between  TARGUN
PROPERTIES,  INC., an Arizona Corporation (hereinafter referred to as "Lessor"),
and  NATIONAL  SCIENTIFIC  CORPORATION.  an  Arizona  Corporation,  (hereinafter
referred  to as  "Lessee").  Lessor  has  entered  into a lease  for  the  space
described below:

     Suite E-160, Offices # 23, 24, & 25
     4455 B. Camelback Rd.
     Phoenix, Arizona 85018

Lessee  desires to lease from  Lessor a certain  portion of Suite  E-160 for the
purpose of conducting  Lessee's  business  together with the fights in common to
the "Common Areas" of the Suite.

In  consideration  of the  covenants and promises each to the other made herein,
the parties hereto agree as follows:

1.   PREMISES.  In  consideration  of the  rents  and  covenants  to be paid and
performed by Lessee,  Lessor does hereby lease to Lessee, and Lessee does hereby
hire from Lessor,  upon the terms and conditions  hereinafter set forth,  Office
Numbers 23, 24, & 25 within the Suite E-160 (The Park Executive  Suites) located
at 4455 Camelback Rd. (hereinafter the "Premises").  All of the property at 4455
E. Camelback  Rd.,  Phoenix,  Arizona  85018,  including but not limited to, the
buildings,  equipment  moms,  grounds,  walls,  parking  areas and  driveways is
hereinafter referred to as The Suites.

     A.   An  exclusive  right to occupy  offices  numbered  23. 24, & 25 . Said
          office  will be  occupied  by no more  than  four  (4)  persons.  Many
          additional  persons  occupy the office,  Lessee shall pay to Lessor an
          additional (Fifty dollars) $50.00 per month for each additional person
          who occupies the office.

     B.   A non-exclusive light in common with other Lessees,  their associates,
          and other  parties  contracting  with  Lessor  to the use of  services
          offered by Lessor and to the use of the common areas of the  Premises,
          including  but not  limited to the  reception  area,  amenities,  copy
          machine room, conference room, and corridors, as provided by Lessor on
          this floor in the Suite.

2.   TERM.

     A.   The term shall  commence on September 1. 1998 and  terminate on August
          31 1999 subject to the provisions hereinafter provided.

     B.   If the Premises are not ready for occupancy on the  commencement  date
          of the Lease, this Lease shall remain in full force and effect. Lessee
          should  physically  inspect the  Premises to verify that the  Premises
          will be ready on any  promised  date.  Lessor  shall  not be liable to
          Lessee for any loss or damages  resulting  from the Premises not being
          ready for occupancy on the  commencement  date of this Lease,  and the
          term (or any rent increase date herein) shall not be extended,  but in
          such event all rent shall be abated  during  the  period  between  the
          commencement  of the  said  Term and the time  when the  Premises  are
          available to Lessee,  the term of the Lease shall  commence,  and rent
          shall  commence  without any  deduction or offset,  on the date Lessee
          moves into the leased  space or has a telephone  installed,  whichever
          occurs first.

     C.   Either party may  terminate  this Lease at the  expiration of the term
          set forth herein.  Lessee must give thirty (30) days written notice to
          Lessor of Lessee's  intent to terminate the Lease at the expiration of
          the term. If Lessee vacates said premises before the expiration  date,
          Lessee  will be held  responsible  to Lessor  for all rent owed  until
          specified  termination  date. If Lessee does not renew Lease or sign a
          new lease prior to the expiration of Lease,  Lessor reserves the right
          to  immediately  terminate  rental  and  serve an  immediate  eviction
          notice.  Also, if Lessee fails to give thirty (30) day written  notice
          of his intent to vacate the  premises  at the end of the term,  Lessee
          will  automatically be considered a month-to-month  tenant and will be
          responsible for the current market rental rate of the premises decided
          at Lessor's  discretion,  until such time that Lessee does give thirty
          (30) days written notice of Lessees Intent to vacate premises.

3.   RENT. Lessee agrees to pay to lessor (as rental for the Premises  described
in Paragraph 1 hereof the following monthly sum of:
<PAGE>
            $2400.00 Base Rent               $ 45.60 State Rental Tax
            $        Telephone Rent          $       Other
            $        Telephone Answering     $       Other
            $        Furniture Rental        $ 90.00 Covered Parking

                         $2,535.60 TOTAL MONTHLY RENTAL

All rents  shall be due and  payable on the first of each  month.  Rents  become
delinquent  after the 5th of each month at which time  Lessee is  considered  in
default of Lease and is  responsible  for any and all penalties set forth herein
as described in paragraph l2of Lease.

4.   SECURITY  DEPOSITS  Upon  execution  of this Lease by Lessee,  Lessor  will
retain  a  security  deposit  in the  amount  of  $750.00,  $300.00  of which is
non-refundable.

     A.   Lessee's security deposit  represents a bond on the part of the Lessee
          for the faithful  performance  of the  provisions  of tins Lease.  The
          security  deposit  will not be  interest  bearing to Lessee and may be
          commingled by Lessor with other funds of Lessor.  The security deposit
          will not and shall not be  applied  as rent by Lessor or  Lessee,  and
          shall be retained by Lessor during Lessee's tenancy. If Lessee remains
          in the Premises after the expiration  date of the Lease,  the security
          deposit will be retained by Lessor until Lessee's  security deposit as
          is  reasonably  necessary  to  remedy  and  defaults  of Lessee in the
          payment  of rent to  repair  damages  to the  Premises  caused  by the
          Lessee,  and the parties  expressly agree that the security deposit is
          made for all the aforesaid specific purposes.  If the space rented has
          been  previously  occupied,  Lessee  acknowledges  inspection  of  the
          carpeting,  flooring, walls, wall coverings,  ceiling, and door of the
          leased premises and  acknowledges  that there are no holes,  stains or
          other damage  thereto if not  specified in detail at the bottom of the
          last  page of this  Lease.  II  Lessee's  space  is not  completed  or
          available  for  inspection,   Lessee  has  ten  (10)  days  after  the
          commencement date of this Lease to send a letter via Certified Mail to
          lessor identifying any holes,  stains, or other damages. If Lessee has
          paid all of the rent due under  this  Lease,  Lessor  shall  return to
          Lessee the entire  security  deposit  (less  $100.00 for  cleaning and
          painting  and any  offsets  for  damages)  for each suite  occupied by
          Lessee after sixty (60) days after  Lessee moves out of the  Premises.
          II any law exists or is enacted  which  contradicts  any  provision of
          these security deposit provisions,  Lessor is not liable to Lessee for
          any damages unless Lessee sends Lessor by Certified Mail a copy of the
          applicable case of code and Lessor fails to cure same within seven (7)
          days.

5.   MASTER  LEASE.  Lessee  recognizes  that  there is a Master  Lease of which
Lessee's office (s) is a portion, and Lessee shall have no greater rights to the
use and  occupancy  of the  Premises  than  Lessor has with the  Building  under
Lessor's Master Lease. Lessee is bound to Lessor in the same manner as Lessor is
bound to the Building  with respect to all standard  lease  provisions,  such as
eminent  domain,  destruction  of  building,  etc..  as  well as the  rules  and
regulations  of the  Building.  Lessee  agrees to release and  forever  hold the
Lessor  harmless  from any claim of damages,  liabilities  or losses  alleged or
proven to be due, in whole or in part,  to any dispute which might arise between
Lessor and Landlord  under the Master Lease.  In the event of termination of the
Master Lease,  Lessee  shall,  at the option of Lessor's  Landlord,  attorney to
Lessor's Landlord and recognize Lessor's Landlord as Lessor under this Sublease.
This Paragraph does not obligate  Lessee in any way to the Building or to anyone
else,  for anyone else's rent,  or any payment  whatever,  except  expressly set
forth in this  Agreement.  Although  Lessor's  rent may be  increased  under the
Master Lease if taxes,  utilities or maintenance  costs increase,  Lessee's rent
will not be increased during the term of this Lease (except  otherwise  provided
in Paragraph 3 hereof).

     All reference to Lessee in the Agreement is to mean  Sub-Lessee;  reference
to Lessor is to mean Sub-Lessor; and reference to Lease is to mean Sub-Lease.

6.   IMPROVEMENTS

     A.   Lessee may not make any  improvements  within the office leased herein
          without the written  permission  of Lessor.  Lessee  shall pay for any
          such  improvements.  Lessee may remove  any  improvements  paid for by
          Lessee provided that Lessee repairs any holes, gaps or other damage to
          walls,  ceiling,  flooring or their coverings.  Lessee will remove any
          improvements (other than additional, normal height electrical outlets)
          installed by Lessee and restore the Premises to the condition prior to
          Lessee's  occupancy  if the  next  tenant  in that  space  objects  to
          Lessee's improvements. Lessee may not remove any improvement for which
          Lessor  contributed  payment without  Lessor's prior written  consent.
          During  the  restoration  period,  Lessee  shall pay rent to Lessor as
          provided herein as if said space were otherwise occupied by Lessee.

     B.   If Lessee  requires any  additional  air  conditioning  or  electrical
          outlets of separate  circuits for a computer or other office equipment

                                        2
<PAGE>
Lessee will be  responsible  for the entire cost thereof.  Lessee will order all
additional air conditioning or electrical work through, or with the approval of,
the Building Manager.

7.   REPAIRS.  The Building  which leases the Premises to Lessor is  responsible
for  construction  of the Premises and repairs to  elevator,  air  conditioning,
electrical,  plumbing and structural  supports under the Master Lease. Lessor is
not liable to Lessee by reason of any defect  inadequacy,  or  insufficiency  in
sane. Lessee may not deduct or offset any amount from rent due herein because of
any  problem  regarding  construction,  repairs  or lack  thereof.  Lessor  will
coordinate any repair or complaint of Lessee;  however, any claim by Lessee with
respect  thereto  shall be made solely  against the Building  and Lessor  hereby
assigns to Lessee,  solely for the purpose of making and  prosecuting any claim,
repairs for dangerous  conditions existing in the common areas within the Suite.
Lessee is responsible for, and shall indemnify and hold Lessor harmless from and
against,  any damage to  persons  or  property  caused by  Lessee,  or  Lessee's
employees,  agents, clients,  guests or invitees.  Lessee is not responsible for
repairing wall holes from normal sized nails used to hang pictures.

8.   UTILITIES, SERVICES.  MAINTENANCE. AND CONSTRUCTION.  Under Lessor's Master
Lease,  the  Building  provides  utilities,  services  janitorial,  heat and air
conditioning) , and maintenance.  Janitorial  services include carpet vacuuming,
but not  shampooing.  Heat and air  conditioning  is  provided  during  genrally
recognized  business  days and hours;  however,  Lessee  will have access to the
Premises 24 hours a day,7 days a week,  subject to the Buildints rules requiring
proper  identification  after  normal  business  hours.  Lessor is not liable to
Lessee by reason of any  failure to provide,  or the  inadequacy  of  utilities,
janitorial,  heat or air  conditioning  services or  maintenance.  Lessor is not
responsible for any negligence of the Building's agents, servants, or employees.
Lessee may not deduct or offset any amount  from rent due herein  because of any
problem  regarding  utilities,  heat,  air  conditioning,  janitorial  services,
maintenance  services or defective  construction  of  Premises.  Upon request by
Lessee, Lessor will write the Building regarding any complaint about maintenance
or construction  however, any claim by Lessee with respect thereto shall be made
by Lessee  directly  to the  Building,  under the  Master  Lease.  Lessor is not
responsible for maintaining,  repairing,  or cleaning the floor coverings,  wail
covering  or  venetian  blinds  within  Lessee's  Premises,  other  than  normal
janitorial service provided by the Building.

     A.   EXTRAORDINARY  CONSUMPTION  OF SERVICES.  Lessee shall not without the
          written  consent  of  Lessor,  use  any  apparatus  or  device  in the
          Premises,  other than a reasonable number of small business  machines,
          that  will in any way  increase  the  amount of  electricity  or water
          usually  furnished  or  supplied  for use of the  Premises  as general
          office space, or that will materially affect the temperature otherwise
          maintained by the air conditioning or heating system. In Lessor's sole
          discretion,  Lessee  agrees to pay promptly  upon demand by Lessor all
          additional  water or electric  current  consumed,  plus any additional
          expenses incurred in keeping track of said consumption,  including the
          cost of installing  separate  meters in and to the Leased  Premises if
          Lessor deems it necessary.

9.   TELEPHONE AND RECEPTION.  Lessor agrees to provide telephone  answering for
one line and reception  service as reasonably  required by Lessee from 8:00 a.m.
to 5:00 p.m., Monday through Friday,  nationally  recognized  holidays excepted.
Additional lines will be answered at a cost of $25.00 per month per line. Lessee
shall be responsible for its own telephone  expense.  and the  installation  and
monthly  service  charges,  if any,  from the  telephone  company  by  reason of
Lessee's  lines  being  connected  to the  reception  desk  and  telephone  room
consoles,  whether billed to Lessor or Lessee.  Any telephone  expense billed to
Lessor  (including  any  telephone  company  double  charge)  shall  be  paid or
reimbursed by Lessee to Lessor.

     If the telephone  company does not install  Lessee's phone on or before the
commencement  date of this Lease, the  commencement  date shall not be extended,
nor shall  rent be abated.  Lessor  will  assist  Lessee in  ordering  lines and
equipment  through  Lessor's  interconnect  telephone  company;  however,  it is
Lessee's  responsibility  to make certain lines are installed in Lessee's office
and to Lessor' central call director in a timely fashion.

     Lessee recognizes that telephone answering and reception services are never
perfect  and that  even the best  receptionists  and  telephone  operators  make
mistakes.  Lessor strives to provide excellent telephone answering and reception
services;  however,  reception services are functions that are under the control
of Lessee in that Lessee may perform either or both of these functions  directly
through Lessee's  employees Lessee hereby agrees to assume the risk of negligent
(passive  and/or active)  performance of telephone  answering  and/or  reception
service.  Lessee agrees that Lessor shall not be liable for any loss of business
or damage of any sort occurring  through or in connection with, or incidental to
the furnishing of, or the failure to furnish,  telephone  answering or reception
service.  Further, Lessee agrees to indemnify,  release and hold Lessor harmless
from any loss,  damage,  claim or liability arising out of or in connection with
any telephone  answering  and/or  reception  service provided or not provided by
Lessor's  employees  to Lessee or to any caller,  visitor or associate of Lessee
Lessor  shall not be liable for any loss of  business or damages of any sort for
authorizing or permitting the telephone company to disconnect Lessee's telephone
service if Lessee has not paid its telephone bill.

     Lessor  acknowledges that Lessee's separate number connected to the central
call  director  belongs to Lessee.  If,  upon  termination  of this  Lease,  the
telephone company requires Lessor's signature to assign said telephone number to
Lessee, Lessee may sign Lessor's name to the telephone company form.

                                        3
<PAGE>
     Lessee   provides  open   message/mail   slots  for  all  tenants.   Lessee
acknowledges  that  Lessor is not  responsible  for loss or theft of messages or
mail.

     Upon termination of this Lease, Lessor will write on all mail "Moved-Please
Forward to Sender" and return such mail to the post office. Lessor win not store
mail nor place a forwarding address on it unless Lessee pays the then-prevailing
charge for said service.

10.  PARKING.  Lessee  may  have  monthly  parking  in  the  Building's  parking
facilities, if any, according to the Building's rules, regulations and rates.

11.  ANIMALS AND VEHICLES. Lessee will not bring, nor pennit any of its visitors
to bring, any animal (except  seeing-eye dog),  bicycle or other vehicle (except
for a wheelchair) into the Suite.

12.  DEFAULT, REMEDIES

     A.   By Lessee.  Lessee  will be in  default  under the Lease if any of the
          following occurs:

          1.   If  Lessee  falls  to pay  the  rent or make  any  other  payment
               required by the Lease  within three (3) working days after Lessor
               sends Lessee a written notice or demand for payment.

          2.   If on three or more  occasions in any twelve month period  Lessor
               does not receive either Lessee's  regular monthly payment of rent
               and other  regularly  recurring  charges  on or before  the first
               business  day of the month or any other  payment on or before the
               date it is due.

          3.   If Lessee  assigns  the Lease or  mortgages  its  interest in the
               Lease or sublets any part of the Premises.

          4.   If  Lessee  abandons  the  Premises,  or ceases  to  operate  its
               business on the Premises,  or becomes  bankrupt or insolvent,  or
               makes any general  assignment of all or a substantial part of its
               property  for the  benefit  of  creditors,  or if a  receiver  is
               appointed to operate  Lessee's  business or to take possession of
               all or a substantial part of Lessees property.

          5.   If Lessee  fails to  maintain  the  insurance  as required by the
               Lease.

          6.   If Lessee  breaches any other provision of the Lease and fails to
               cure the  breach  within  fifteen  (15) days after  Lessor  sends
               written  notice of the breach,  or, if the breach cannot be cured
               within  fifteen  days,  then if  Lessee  does  not  proceed  with
               reasonable  diligence to cure the breach  within such  additional
               time as may be reasonably necessary under the circumstances.

          7.   If  Lessee  is  disruptive  and/or  uses  obscenities  or  vulgar
               language  so as to disturb  any of the other  tenants or Lessor's
               employees.

B.   Lessor's Remedies,  if Lessee is in default then Lessor may take any of the
following actions:

     1.   Fees.

          a. if rent and monthly  service  charges have not been received by the
          5th of the month, a late charge of $30.00 will be charged.

          b. if rent or monthly  service  charges have not been  received by the
          6th of the month,  an additional late charge of $10.00 per day, or ten
          percent (10%) of the total monthly rental, whichever is greater, shall
          be charged  until the rent and  service  charges,  including  the late
          charge, are paid in full.

          c. if one or more checks are  dishonored  by Lessee's bank in a twelve
          (12) month  period,  Lessor  may  require,  during the  balance of the
          Lessee's tenancy,  payment by cashier's check or money order. Lessee's
          failure to comply  therewith  will  constitute  a material  breach and
          permit Lessor to terminate this Lease.

          d. If a check is dishonored by Lesee's bank, a $50 returned  check fee
          will be charged.

                                        4
<PAGE>
          e. In the event that Lessee becomes delinquent in the payment or rent,
          or is unable to meet the monthly  rental  obligation on a timely basis
          requiring eviction,  require cleaning and/or repairs at the expense of
          Lessor,  Lessee  agrees  to pay all  collection  agency  fees that are
          required for collection of Lessee's. debt.

     2.   RE-ENTRY AND REPOSSESSION.  Lessor may re-enter and take possession of
all or any part of the Premises and remove Lessee and any person  claiming under
Lessee from the Premises,  and without  committing a trespass or becoming liable
for any loss or damage that may be  occasioned  thereby.  Lessor may also change
the locks to the  Premises  without  notice at Lessee's  expense.  Re-entry  and
repossession of the Premises will not by themselves terminate the Lease.

     3.   REMOVAL, STORAGE AND SALE OF PROPERTY. Lessor may remove any property,
including fixtures,  from the Premises and store the same at Lessee's expense in
a  warehouse  or any other  location,  or Lessor may lease the  property  on the
Premises pending sale or other disposition. If Lessor leaves the property on the
Premises or stores it at another  location  owned or controlled by Lessor,  then
Lessor may charge Lessee a reasonable  fee for storing and handling the property
comparable  to what  Lessor  would  have  had to pay to a third  party  for such
services.  Lessor  will not be liable  under any  circumstances  to Lessee or to
anyone  else for any  damage  to the  property.  Lessor  shall  proceed  to sell
Lessee's property in accordance with Arizona law.

     4.   RELETTING THE PREMISES. Lessor may relet the Premises at whatever rent
and on whatever  terms and  conditions it deems  advisable.  The term of any new
Lease may be  shorter  or  longer  than the  remaining  term of this  Lease.  In
reletting  the  Premises,  Lessor  may make any  alterations  or  repairs to the
Premises it feels are  necessary or  desirable;  may subdivide the Premises into
more  than  one  unit and  lease  each  portion  separately;  may sell  Lessee's
improvements,  fixtures  and other  property  located an the Premises to the new
tenant,  or include  such  improvements,  fixtures  and  property as part of the
Premises  without  additional cost may advertise the Premises for sale or lease;
may hire broken or other agents; and, may do anything else it deems necessary or
helpful in reletting the Premises. Lessee will be liable to Lessor for all costs
and expenses of the reletting including but not limited to rental concessions to
the new tenant,  broker's commissions and tenant  improvements,  and will remain
liable for the rent and all other  charges  arising  under the  Lease,  less any
income received from the new tenant, unless the Lease is terminated as set forth
below.

     5.   TERMINATION OF LEASE. Lessor may terminate the Lease at any time after
Lessee defaults by sending a written notice to Lessee expressly stating that the
Lease is being  terminated.  Termination  will be  effective  on the date of the
notice or on any other date set forth in the notice.  Until  Lessor sends Lessee
such a notice,  the Lease will remain in full force and effect,  and Lessee will
remain  liable  for paying  the rent and other  charges  that come due under the
Lease and for performing  all other terms and conditions of the Lease.  No other
action taken by Lessor,  including  repossession  of the  Premises,  removing or
selling Lessee's separate property,  reletting the Premises,  or filing suit for
possession or for damages,  will  terminate the Lease or release Lessee from its
continuing liability for complying with its terms and conditions.

     6.   DAMAGES.  Lessor may recover from Lessee all costs and expenses Lessor
incurs as a direct or indirect  consequence  of Lessee's  breach,  including the
cost of storing and selling  Lessee's  property,  reletting  the  Premises,  and
bringing suit against Lessee for  possession or damages.  If Lessor made or paid
for  any  improvements  to the  Premises,  or  granted  Lessee  any  improvement
allowance or credit  against rent for Lessee's  improvements,  then Lessor shall
also  be  entitled  to  recover  the  unamortized  portion  of the  cost of such
improvements or the amount of such allowance or credit determined by multiplying
the total  amount  of such  cost or  allowance  or  credit  by a  fraction,  the
denominator of which is the total number of months of the initial lease term and
the numerator of which is the number of months of the term remaining at the time
of Lessee's  default.  Also, if the Lease provides for any month during which no
rent or a reduced rent is payable,  or for any other rent  concession to Lessee,
then,  upon  default,  Lessee  shall  become  liable for the full  amount of the
monthly base rent, plus applicable  taxes, for such months,  and Lessor shall be
entitles to recover as  additional  rent the amount  that would have  payable by
Lessee for such months if the monthly  base rent  provided  for had been payable
throughout  the entire term of the Lease.  Unless Lessor  terminates  the Lease,
Lessee will also  remain  liable for any  difference  between the rent and other
charges  called  for by the Lease and the rent and other  charges  collected  by
Lessor from any new tenant For any month in which  Lessor  collects  less from a
successor tenant than is payable under this Lease, Lessor may demand that Lessee
immediately make up the difference,  and Lessor may bring suit against Lessee if
Lessee fails to do so. If Lessor does  terminate the Lease,  then Lessee will no
longer be liable on a continuing  monthly  basis for the rent and other  charges
that would have  become due under the Lease  thereafter,  but Lessee will remain
liable for all sums accrued under the Lease to the date of termination,  as well
as for all  costs  and  expenses  incurred  by  Lessor,  and any  other  damages
sustained by Lessor,  as a  consequence  of Lessee's  breach.  Also,  Lessor may
recover  from Lessee the  difference  between  the present  value at the date of
termination  of the rent  payable  under law or in ui for  breach  of  contract,
damages or other appropriate  relief,  The rights and remedies  described herein
are cumulative,  not exclusive,  and Lessors exercise of any one right or remedy
will not preclude the simultaneous or subsequent  exercise of any other right or
remedy.

13.  INDEMNIFICATION  OF  LESSOR;  INSURANCE.  Lessor  shall  not be  liable  or
answerable to Lessee or any other person,  firm or corporation for any injury or
damage  resulting  from the  condition,  or any defect in, the Premises.  Lessee
agrees to  indemnify  Lessor  against.  and hold  Lessor  and the  Premises  and
Building  free  and  harmless  from  any  and  all  penalties,  costs,  expenses
(including attorney's fees), claims, demands and causes of action arising out of
or in  connection  with  (a)  any  accident  or  other  occurrence  in or on the

                                        5
<PAGE>
facilities (including, without limiting the generality of the term "facilities",
stairways,  passageways  or  hallways),  the use of  which  Lessee  may  have in
conjunction  with other  tenants of the  Building,  which such  injury or damage
shall be caused in part or in whole by the act,  neglect,  fault or  omission of
any duty with respect to the same by Lessee,  its agents,  servants,  employees,
invitees. permittees,  customers, clients or guest, (b) the condition of, or and
condition  of, or any defect in,  Lessee's  fixtures  or  equipment  or any part
thereof,  (c) the use or  occupancy  of the  Premises by Lessee or any tenant of
Lessee,  or (d) any breach of this Lease by Lessee.  Lessor is not liable  foray
lost or stolen items in the possession of Lessee's office.

     Lessee agrees to and shall at its own cost and expense procure and maintain
during the entire Lease Term and any  extensions  thereof  comprehensive  public
liability insurance covering the Premises and their surrounding areas and naming
Lessor as an additional  Insured.  The liability  coverage tinder such insurance
shall not be less than Five  hundred  Thousand  Dollars  ($500,000)  for i4my or
death of one person in any one  accident  or  occurrence;  One  Million  Dollars
($1,000,000)  for injury or death of more than one person m any one  accident or
occurrence; and One Hundred Thousand Dollars ($100,000) for property damage. The
amounts of insurance  coverage stated herein may be reduced by mutual  agreement
of the parties. Any such reduction must be stated In writing and executed by the
parties.  Lessee  shall  provide  Lessor  with  certificates  of such  insurance
evidencing  Lessee's  compliance.  All policies of insurance  shall also provide
that such  insurance  will not be  canceled,  except after ten (10) days written
notice to Lessor The original of all policies  shall remain in the possession of
the  Lessee,  provided  however,  that the  Lessor  shall be issued  copies by a
responsible  company or  companies  authorized  to do  business  in the State of
Arizona. In no event shall the limits of said policies be considered as limiting
the liability of Lessee to Lessor under the first section of this Paragraph 13.

14.  USE OF PREMISES.  Lessee  shall not do or permit  anything to be done which
will invalidate or increase the cost of any fire, extended coverage or any other
insurance policy covering the Building and/or property located therein.

     Lessee shall not do or permit  anything to be done in or about the Premises
which will in any way obstruct or interfere  with the rights of other tenants or
occupants of the floor, or injure or annoy them, or use or allow the Premises to
be sued for any improper,  immoral, unlawful or objectionable purpose, nor shall
Lessee cause, maintain or permit any nuisance in, on or about the Premises. This
prohibition  includes,  but is not limited to.  loud music.  other loud  noises,
burning incense or other offensive or objectionable odors.

     Lessee may use and occupy the leased  Premises  for general  office use and
for no other  business  or purpose  without  written  consent of Lessor.  Lessee
shall,  at its own expense,  perform and fully satisfy all laws,  statutes,  and
regulations  which may relate to or affect the occupancy of the leased  Premises
or any governmental authorities having jurisdiction over the subject Premises.

15.  KEYS.  Lessor will supply one (i) key to the door of each of office- Lessee
will pay the Building's  prevailing charge for elevator keys,  security cards or
keys to enter the building after normal  business  hours,  or additional  office
keys. Lessor is not responsible for changing any lock, If the master key kept by
Lessor's  receptionist is stolen,  lost or misplaced,  Lessor is not responsible
for changing  Lessee's locks.  Lessee  understands that Lessor is not liable for
thefts  and  Lessee  may  install a dead bolt lock on or change  the  tumbler to
Lessee's office door (s) upon written approval of Lessor;  in which event Lessee
must  give a copy  of the  key to  Lessor  to be  used  in  emergencies  and for
maintenance  purposes.  Lessee  agrees to return all keys to Lessor  immediately
upon vacating its office.  Failure to return all keys immediately will result in
a charge of Lessee for changing the locks, which will be an amount not less that
Twenty-five Dollars ($25). Lessee agrees to pay this charge within ten (10) days
of request by Lessor.

16.  ENTRY BY LESSOR.  Lessor  shall have the right to enter the Premises at any
time to  inspect  the same or to cure any  default  (including  a breach  of the
Building's  rules and  regulations),  to supply any  service to be  provided  by
Lessor hereunder,  to submit the Premises to prospective  purchaser,  tenants or
mortgagees.  to post  notices of  non-responsibility,  and to alter,  improve or
repair the Premises and any portion of the building,  without abatement of rent,
necessary  structures where reasonably  required by the character of the work to
be  performed,  always  providing  that the  business  of  Lessee  shall  not be
interfered with unreasonably. Lessee hereby waives any claim for damages for any
injury,  inconvenience  or  interference  with  Lessee's  business,  any loss of
occupancy or quiet  enjoyment of the Premises,  and any other loss occasioned by
Lessor's entry for any of the aforesaid purposed.

     For each of the  aforesaid  purposes,  Lessor  shall at all times  have and
retain a key with which to unlock all of the doors upon the Premises,  excluding
Lessee's  vaults,  and  Lessor  shall have the right to use any and all means to
open said doors in an emergency in order to obtain  entry to the  Premises,  and
any entry to the Premises  obtained by Lessor shall not under any  circumstances
constitute  forcible or unlawful  entry into or a detainer of the Premises or an
eviction of Lessee from the Premises or any portion  therefor.  Lessor shall not
be liable for the consequences of admitting by passkey,  or refusing to admit to
the Premises, Lessee or any agent or employee of Lessee.

17.  LESSOR'S  RIGHT  TO  CURE  DEFAULTS.  All  convents  and  agreements  to be
performed  by Lessee  under  any of the terms of the Lease  shall be at its sole
cost and expense and. except as otherwise  specifically provided herein, without
any  abatement of rent.  If Lessee shall fall to pay any sum of money other than
rent  required to be paid by it hereunder or shall fail to perform any other act
on its part to be performed hereunder,  Lessor may but shall not be obligated so
to do, and  without  waiving any rights of Lessor or  releasing  Lessee from any

                                        6
<PAGE>
obligations of Lessee hereunder, make such payment or perform such other ad. All
sums so paid or expenses  incurred by Lessor and all necessary  incidental costs
together with interest  thereon at the rate of eighteen  percent (18%) per annum
from the date of such  payment  by  Lessor  shall be  considered  as rent  owing
hereunder  and shall be payable to Lessor on demand or, at the option of Lessor,
may be added to any rent then due or  thereafter  becoming due under this Lease.
In  addition.  Lessor shall have the same Night and remedies in the event of the
nonpayment  thereof be Lessee as in the case of default by lessee in the payment
of any rent hereunder.

18.  DELAYS. DEFAULT BY LESSOR. Lessor shall not be responsible for any delay or
failure In the observance or performances of any term or condition of this Lease
to be observed or performed by Lessor to the extent that such delay results from
action or order of governmental authorities;  civil commotions;  strikes, fires,
ads of God or the public  enemy;  act or default of any Lessee in the  Building,
inability  to procure  labor,  material,  fuel,  electricity,  or other forms of
energy; or any other cause beyond the reasonable  control of Lessor,  whether or
not  similar to the  matters  herein  specifically  enumerated.  Any delay shall
extend by like time any period or  performance by Lessor and shall not be deemed
a breach of, or failure to perform, this Lease or any provisions thereof.

     In the event of any  default  under this Lease by  Lessor.  Lessee,  before
exercising  any rights that it may have at law to cancel this Lease,  shall have
given  notice  of such  default  to  Lessor  and  shall  have  offered  Lessor a
reasonable  opportunity  to correct and cure the default,  Lessee also agrees to
give the holders of any mortgages or deeds of trust  (mortgages),  by registered
mail, a copy of any notice of default served upon Lessor, provided that prior to
such notice Lessee has been notified in writing (by way of Noticed Assignment of
Rents and Leases,  or  otherwise) of the  addresses of such  mortgagees.  Lessee
further  agrees that If Lessor shall have failed to cure such default within the
aforesaid time limit,  then the mortgagees shall have an additional  thirty (30)
days within which to one such default or if such default  cannot be cured within
that time,  then such  additional time as may be necessary if within such thirty
(30) days any mortgagees  has commenced and is diligently  pursuing the remedies
necessary to cure such default  (including  but not limited to  commencement  of
foreclosure  proceedings if necessary to effect such cure),  in which event this
Lease  shall not be  terminated  while  such  remedies  are being so  diligently
pursued.

19.  NOTICE TO LESSOR OR LESSEE.  All  notices  required  or desired to be given
under this Lease must be in writing and shall be  personally  given or delivered
by certified or  registered  mail  addressed to the Lessee at the address of the
Premises and to the Lessor at the address of the Suite in which the Premises are
located.  Personal delivery to the floor receptionist does not constitute notice
to either  Lessor or Lessee.  Either party may, by written  notice to the other,
specify a different address for notice purposes

20.  TENANT HOLDOVER.  In the event that Lessee,  without the written consent of
Lessor  shall bold over the  expiration  of the term of this Lease,  then Lessee
hereby  waives all notice to quit and agrees to pay Lessor,  for the period that
the Lessee is in possession after the expiration of this Lease, a monthly rental
which is twice the total monthly rental payable  pursuant to Paragraph 3 of this
Lease,  together with all damages sustained by Lessor on account of such holding
over.  If  Lessee  occupies  any part of the  Premises  for any  portion  of any
calendar  month,  Lessee  will be liable for rent for the full  calendar  month.
Lessee expressly agrees to hold Lessor harmless for all loss and damages. direct
or consequential,  which Lessor may suffer in defense of claims by other parties
against  Lessor  arising out of the holding  over by Lessee,  Including  without
limitation,  attorney's  fees which may be incurred by Lessor in defense of such
claims.  The foregoing  provision  shall not service as permission for Lessee to
hold over nor serve to extend the term of this Lease.  Acceptance of rent by the
Lessor subsequent to the expiration of the term shall not constitute  consent to
any holding oven

21.  TRANSFER  OF  LESSORS   INTEREST.   In  the  event  Lessor   transfers  its
reversionary  interest  in the  Premises  (other  than a transfer  for  security
purposes only),  Lessor shall be relieved of all obligations  accruing hereunder
after the effective  date of such transfer,  including,  but not limited to, the
return of security  deposits or other funds held by Lessor,  provided  that such
obligations have been expressly assumed in writing by the transferee, and Lessee
agreed to attorn to the transferee.

     Lessee  agrees at any time and from time to time at the  request of Lessor,
to execute, acknowledge and deliver to Lessor within ten (10) days from the date
of said request, a statement in writing certifying that this Lease is unmodified
and in full and effect (or if there have been  modifications).  and the dates to
which the fixed rent and other  charges  have been paid in  advance,  if any, it
being intended that any such statement  delivered pursuant to this paragraph may
be relied  upon by any  prospective  purchaser,  mortgagee  or  assignee  of any
mortgage of the Premises.

22.  RETURN OF POSSESSION. Lessee shall vacate the leased Premises in good order
and  repair  in which  such  property  was at the  commencement  of this  Lease,
ordinary wear and tear  excepted.  Lessee shall remove all its property no later
than 5:00 pm on the day upon  which  this Lease or any  extension  thereof  ends
whether  upon  notice or by holdover or  otherwise.  Lessor  shall have the same
rights to enforce this covenant by ejectment and for damages or otherwise as for
the breach of any other conditional therein, and remove from the leased Premises
all  property,  materials or equipment  Installed by Lessee,  provided that such
property is removed without injury of the leased Premises.

23.  CONFERENCE ROOM.  Lessee may use the conference  mom(s) on a reserved basis
or without reservation If not previously reserved, Lessee will not be allowed to
request any standing or permanent reservation of the conference room(s).  Lessee
will pay the then-current rate for conference morn usage over five (5) hours per

                                        7
<PAGE>
calendar month per office leased.  Any use of the conference room(s) by Lessee's
visitors  will be  considered  to be use by  Lessee,  whether  or not  Lessee is
present at the lime of such use, and Lessee will be responsible  for any charges
incurred for such use.

24.  LESSOR'S  EMPLOYEES.  Lessee  acknowledges that Lessor expends  substantial
amounts  of money and effort to  acquire,  train and  retain  employees  for the
services  provided to Lessee,  including  employment  agency and training costs.
Lessee agrees that during the term of, or any extension or renewal of, the Lease
and for a period on one (i) year thereafter,  Lessee will not hire or attempt to
hire In any capacity whatever, full-time, part-time or on a work for hire basis,
on behalf of itself or any person or entity by whom Lessee (if an individual) is
employed, any employee of Lessor. This prohibition shall apply during the period
of any such employee's employment by Lessor and for ninety (90) days thereafter.
The  parties  agree that it would be very  difficult  to  ascertain  the damages
stiffen by Lessor for Lessee's breach of the provision.  Therefore, it is agreed
that in the event of a breach of this  provision  by Lessee,  Lessee will pay to
Lessor as  liquidated  damages,  and not as a penalty,  a sum of money  equal to
three (3) months pay for the subject  employee at the rate paid by Lessor during
such employee's last full month employment by Lessor.

25.  ATTORNEY'S  FEES.  In the event it becomes  necessary  for either  party to
employ an attorney  in order to enforce  the terms of this Lease,  or to protect
the rights of either party hereunder,  and such party is successful in an action
in connection therewith, the other party agrees to pay such prevailing party the
reasonable attorney's fees and legal costs incurred.

26.  RESTRICTION.  Lessee  will  not  bring,  copier,  postage  meter,  or other
equipment  provided by Lessor for Lessee's  benefit into the Suite without prior
written approval of Lessor.

27.  COVENANT NOT TO COMPETE. Tenant agrees that during the terms of this Lease,
he shall  not in or about the  Premises,  engage in the  primary  or  incidental
business of providing  photocopy  service,  facsimile receipt and transmissions,
secretarial  services of any kind, or any similar services which are provided by
Lessor for the benefit of Its tenants.

28.  SPECIAL CONDITIONS.

     A.   Targun Properties,  Inc. will release National Scientific from Offices
          #2 and #5 as of  September 1, 1998.  Targun  Properties,  Inc.  offers
          Office #25 to National  Scientific as an  alternative  office,  at the
          monthly rent rate of $460.00 per month.

     B.   If,  at any  lime,  National  Scientific  defaults  on the  new  lease
          agreement,  National  Scientific  will be responsible  for the monthly
          rent of all four  original  offices  (#2,  5, 23, & 24)  rented in the
          original lease agreement.

     C.   National  Scientific may take  possession of Office #25  approximately
          September 1, 1998.

     D.   Tenant agrees to give Landlord the desk in #2 at no charge.

                                        8
<PAGE>
LESSEE:                                 LESSOR:
NATIONAL SCIENTIFIC CORPORATION         TARGUN PROPERTIES, INC.

BY: /s/ VERNON TRAYLOR                  By: /s/ MICHAEL TARGUN
    ---------------------------------       ---------------------------------
    VERNON TRAYLOR                          MICHAEL TARGUN

TITLE: Corp Secretary                   TITLE: PRESIDENT

SS.#/TAX ID  86-0837077
             --------------------
HOME
ADDRESS:
             --------------------
PHONE:       602-954-1492
             --------------------
DATE:        August 24, 1998
             --------------------

                                        9

                                 LEASE ADDENDUM

This  amendment  supplements  and amends the  provisions of the Lease  Agreement
dated August 21, 1998, by and between TARGUN  PROPERTIES,  INC.  ("Lessor") and,
National  Scientific  Corporation  ("Lessee").  In the event of any  conflict or
inconsistency between the provisions of this Amendment and the provisions of the
Lease, this Amendment shall prevail.

                            18 MONTH LEASE EXTENSION
                              Offices #21, #23, #24


______ initials                                                  ______ initials

Effective Date:     September 1, 1999 to February 28, 2001

Rent Rate:          $2,300.00
Sales Tax:          $   43.70
                    ---------
Total               $2,342.70


Terms and  conditions:  Except  to the  extent  inconsistent  with the terms and
conditions  set forth  above,  all the  conditions  and covenant of that certain
Lease  Agreement  dated AUGUST 21,  1998,  as well as all  exhibits,  schedules,
attachments,  addendums  of  clarifications  shall be  binding  upon  Lessor and
Lessee. This agreement shall not constitute an agreement by the Lessor and shall
not be binding upon Lessor unless and until the  Agreement  shall be executed by
both parties.

AGREED TO this 27 day of July, 1999.

LESSEE:                                 LESSOR:
NATIONAL SCIENTIFIC CORPORATION         TARGUN PROPERTIES, INC.


/s/ Vernon Traylor Jr.                  /s/ Michael Targun
- -----------------------------------     -----------------------------------
                                        Michael Targun

Its: Agent                              Its: President
- -----------------------------------     -----------------------------------

                                 LEASE ADDENDUM

This  amendment  supplements  and amends the  provisions of the Lease  Agreement
dated August 21, 1998, by and between TARGUN  PROPERTIES,  INC.  ("Lessor") and,
NATIONAL  SCIENTIFIC  CORPORATION  ("Lessee").  In the event of any  conflict or
inconsistency between the provisions of this Amendment and the provisions of the
Lease, this Amendment shall prevail.

                     LEASE EXTENSION UNTIL SEPTEMBER 30,2001

Effective Date:            October 1, 1999

Rent Rate:                 $2300.00
Sales Tax:                 $  43.70
                           --------
Total                      $2343.70

Terms  and  conditions:  Except  to the  extent  inconsistent  with  the ten and
conditions set forth above, all the conditions and covenant of Sat certain Lease
Agreement   dated  August  21,  1998,  as  well  as  all  exhibits,   schedules,
attachments,  addendums  of  clarifications  shall be  binding  upon  Lessor and
Lessee. This agreement shall not constitute an agreement by the Lessor and shall
not be binding upon Lessor unless and until the  Agreement  shall be executed by
both parties.

AGREED TO this 15th day of September, 1999.

LESSEE:                                     LESSOR:
NATIONAL SCIENTIFIC CORPORATION             TARGUN

BY: /s/ VERNON TRAYLOR                      /s/ MICHAEL TARGUN
    ---------------------------------       ---------------------------------
    VERNON TRAYLOR                          MICHAEL TARGUN

Its: Agent                                  Its: PRESIDENT

                                   ASSIGNMENT

     In consideration of Ten Dollars ($10.00) and other valuable  consideration,
of which we acknowledge  receipt,  we, EL-BADAWY AMIEN EL-SHARAWY,  of 1434 East
Spur Avenue, Gilbert,  Arizona 85296, and MAJID M. HASHEMI, of 1030 E. El Camino
Real, No. 502,  Sunnyvale,  CA 94087,  (the Inventors)  hereby sell, and assign,
subject to the conditions set forth below, to NATIONAL  SCIENTIFIC CORP., having
offices at 4455 E. Camelback  Road,  Suite E160,  Phoenix,  Arizona  85018,  its
successors  and  assigns,  the entire  right,  title and  interest in and to the
improvements  of  HETEROJUNCTION  BIPOLAR  TRANSISTOR  HAVING WIDE BANDGAP,  LOW
INTERDIFFUSION  BASE-EMITTER  JUNCTION,  (the  Invention)  invented  by  us,  as
described in the  application  for United States Patent  Application  Serial No.
08/939,487 filed 29 September 1997 (M&G Docket Number 2238-010), and any and all
applications for patent and patents therefor in any and all countries, including
all divisions, reissues, continuations and extensions thereof, and all rights of
priority  resulting  from the  filing of said  United  States  application,  and
authorize and request any official whose duty it is to issue  patents,  to issue
any  patent  on said  improvements  or  resulting  therefrom  to  said  NATIONAL
SCIENTIFIC  CORP.,  or its  successors  or assigns and agree that on request and
without further consideration,  but at the expense of NATIONAL SCIENTIFIC CORP.,
we will communicate to said NATIONAL SCIENTIFIC CORP., or its representatives or
nominees,  any facts known to us respecting said improvements and testify in any
legal proceeding, sign all lawful papers, execute all divisional, continuing and
reissue  applications,  make all  rightful  oaths and  generally  do  everything
possible to aid NATIONAL SCIENTIFIC CORP., its successors, assigns and nominees,
to obtain  and  enforce  proper  patent  protection  for said  invention  in all
countries.  The  above-discussed  conditions  are as follows:  a) that  NATIONAL
SCIENTIFIC  CORP.  pay all costs related to United States  filing,  prosecution,
issuance,  and  maintenance  of United  States  Patent  Application  Serial  No.
08/939,487,  b) that NATIONAL  SCIENTIFIC  CORP. pay all consulting fees owed to
the  inventors with respect to the Invention,  c) that NATIONAL SCIENTIFIC CORP.
<PAGE>
ASSIGNMENT
S/N: 08/939,487
Page: 2

pay  1% of  all  gross  sales  related  to  the  Invention  to  EL-BADAWY  AMIEN
EL-SHARAWY,  d) that NATIONAL SCIENTIFIC CORP. pay 1% of all gross sales related
to the Invention to MAJID M. HASHEMI, e) that NATIONAL SCIENTIFIC CORP. actively
develop and market the Invention,  and f) that NATIONAL  SCIENTIFIC CORP. remain
solvent  as  evidenced  by  refraining  from  filing for  bankruptcy  under U.S.
Bankruptcy  law.  Should any of the  above-discussed  conditions fail to be met,
then this Assignment shall be deemed void AB INITIO. The Inventors covenant with
said NATIONAL SCIENTIFIC CORP., its successors and assigns,  that the rights and
property  hereby covered are free and clear of any  encumbrances,  and that they
have full right to convey the same as herein expressed.

3/23/98                                 /s/ Lou Ross
- -------                                 ----------------------------------------
DATE                                    Lou Ross
                                        Chairman and C.E.O.
                                        NATIONAL SCIENTIFIC CORP.

STATE OF ARIZONA    )
                    ) ss
County of Maricopa  )

     On this 23 day of 1998, before me, the undersigned, personally appeared Lou
Ross,  known to me to be the  person  whose  name is  subscribed  to the  within
instrument, and acknowledged to me that he executed the foregoing instrument for
the purposes therein contained.

     IN WITNESS WHEREOF, We have set my hand and official seal.


                                        /s/ Vernon M. Traylor, Jr.
                                        ----------------------------------------
                                        NOTARY PUBLIC

(SEAL)

[NOTARY SEAL]
<PAGE>
ASSIGNMENT
S/N: 08/939,487
Page: 3

3/31/98                                 /s/ El-Badawy Amien El-Sharawy
- -------                                 ----------------------------------------
DATE                                    EL-BADAWY AMIEN EL-SHARAWY

STATE OF ARIZONA    )
                    ) ss
County of Maricopa  )

     On this 31st day of March  1998,  before  me, the  undersigned,  personally
appeared EL-BADAWY AMIEN EL-SHARAWY,  known to me to be the person whose name is
subscribed to the within instrument, and acknowledged to me that he executed the
foregoing instrument for the purposes therein contained.

     IN WITNESS WHEREOF, We have set my hand and official seal.


                                        /s/ Flora D. DeBeer
                                        ----------------------------------------
                                        NOTARY PUBLIC
                                        My Commission Expires July 22, 1999

(SEAL)

4-15-98                                 /s/ Majid M. Hashemi
- -------                                 ----------------------------------------
DATE                                    MAJID M. HASHEMI

STATE OF California    )
                       ) ss
County of Santa Clara  )

     On this 15th day of April  1998,  before  me, the  undersigned,  personally
appeared MAJID M. HASHEMI, known to me to be the person whose name is subscribed
to the within instrument,  and acknowledged to me that he executed the foregoing
instrument for the purposes therein contained.

     IN WITNESS WHEREOF, We have set my hand and official seal.


                                        /s/ Har R. Choi
                                        ----------------------------------------
                                        NOTARY PUBLIC

(SEAL)
[NOTARY SEAL]

                                   ASSIGNMENT

     In consideration of Ten Dollars ($10.00) and other valuable  consideration,
of which we acknowledge  receipt,  we, EL-BADAWY AMIEN EL-SHARAWY,  of 1434 East
Spur Avenue, Gilbert, Arizona 85296, and MAJID M. HASHEMI, of 1363 Corte Bonita,
San Jose CA 95120,  (the  Inventors)  hereby  sell,  and assign,  subject to the
conditions set forth below, to NATIONAL SCIENTIFIC CORP., having offices at 4455
E. Camelback  Road,  Suite E-160,  Phoenix,  Arizona  85018,  its successors and
assigns,  the entire  right,  title and interest in and to the  improvements  of
VERTICAL  HETEROJUNCTION BIPOLAR TRANSISTOR,  (the Invention) invented by us, as
described  in the  application  for United  States  Patent  (M&G  Docket  Number
2238-010),  and any and all  applications for patent and patents therefor in any
and  all  countries,  including  all  divisions,  reissues,   continuations  and
extensions thereof, and all rights of priority resulting from the filing of said
United States application,  and authorize and request any official whose duty it
is to issue  patents,  to issue any  patent on said  improvements  or  resulting
therefrom to said NATIONAL  SCIENTIFIC  CORP.,  or its successors or assigns and
agree that on request and without further  consideration,  but at the expense of
NATIONAL  SCIENTIFIC  CORP.,  we will  communicate  to said NATIONAL  SCIENTIFIC
CORP., or its representatives or nominees, any facts known to us respecting said
improvements  and  testify  in any legal  proceeding,  sign all  lawful  papers,
execute all divisional,  continuing and reissue applications,  make all rightful
oaths and generally do everything possible to aid NATIONAL SCIENTIFIC CORP., its
successors, assigns and nominees, to obtain and enforce proper patent protection
for said  invention in all  countries.  The  above-discussed  conditions  are as
follows:  a) that  NATIONAL  SCIENTIFIC  CORP.  pay all costs  related to United
States filing,  prosecution,  issuance,  and maintenance of United States Patent
Application,  b) that NATIONAL  SCIENTIFIC CORP. pay all consulting fees owed to
the inventors with respect to the Invention,  c) that NATIONAL  SCIENTIFIC CORP.
pay  1% of  all  gross  sales  related  to  the  Invention  to  EL-BADAWY  AMIEN
EL-SHARAWY,  d) that NATIONAL SCIENTIFIC CORP. pay 1% of all gross sales related
to the Invention to MAJID M. HASHEMI, e) that NATIONAL SCIENTIFIC CORP. actively
<PAGE>
ASSIGNMENT
VERTICAL HETEROJUNCTION BIPOLAR TRANSISTOR
Page: 2

develop and market the Invention,  and f) that NATIONAL  SCIENTIFIC CORP. remain
solvent  as  evidenced  by  refraining  from  filing for  bankruptcy  under U.S.
Bankruptcy  law.  Should any of the  above-discussed  conditions fail to be met,
then this Assignment shall be deemed void AB INITIO. The Inventors covenant with
said NATIONAL SCIENTIFIC CORP., its successors and assigns,  that the rights and
property  hereby covered are free and clear of any  encumbrances,  and that they
have full right to convey the same as herein expressed.


11/16/99                                /s/ Lou Ross
- --------                                ----------------------------------------
DATE                                    Lou Ross
                                        Chairman and C.E.O.
                                        NATIONAL SCIENTIFIC CORP.

STATE OF ARIZONA    )
                    ) ss
County of Maricopa  )

     On this 16 day of November  1999,  before me, the  undersigned,  personally
appeared Lou Ross,  known to me to be the person whose name is subscribed to the
within  instrument,  and  acknowledged  to me that  he  executed  the  foregoing
instrument for the purposes therein contained.

     IN WITNESS WHEREOF, We have set my hand and official seal.


[NOTARY SEAL]                           /s/ Vernon M. Traylor Jr.
                                        ----------------------------------------
                                        NOTARY PUBLIC


11/15/99                                /s/ El-Badawy Amien El-Sharawy
- --------                                ----------------------------------------
DATE                                    EL-BADAWY AMIEN EL-SHARAWY
<PAGE>
ASSIGNMENT
VERTICAL HETEROJUNCTION BIPOLAR TRANSISTOR
Page: 3

STATE OF ARIZONA    )
                    ) ss
County of Maricopa  )

     On this 15 day of November  1999,  before me, the  undersigned,  personally
appeared EL-BADAWY AMIEN EL-SHARAWY,  known to me to be the person whose name is
subscribed to the within instrument, and acknowledged to me that he executed the
foregoing instrument for the purposes therein contained.

     IN WITNESS WHEREOF, We have set my hand and official seal.

                                        NOTARY PUBLIC

11/15/99                                /s/ Majid M. Hashemi
- --------                                ----------------------------------------
DATE                                    MAJID M. HASHEMI

STATE OF ARIZONA    )
                    ) ss
County of Maricopa  )

     On this 15 day of November  1999,  before me, the  undersigned,  personally
appeared MAJID M. HASHEMI, known to me to be the person whose name is subscribed
to the within instrument,  and acknowledged to me that he executed the foregoing
instrument for the purposes therein contained.

     IN WITNESS WHEREOF, We have set my hand and official seal.


[NOTARY SEAL]                           /s/ Vernon M. Traylor Jr.
                                        ----------------------------------------
                                        NOTARY PUBLIC

                                   ASSIGNMENT

     In consideration of Ten Dollars ($10.00) and other valuable  consideration,
of which we acknowledge  receipt,  we, EL-BADAWY AMIEN EL-SHARAWY,  of 1434 East
Spur Avenue, Gilbert,  Arizona 85296, and MAJID M. HASHEMI, of 1030 E. El Camino
Real, No. 502,  Sunnyvale,  CA 94087,  (the Inventors)  hereby sell, and assign,
subject to the conditions set forth below, to NATIONAL  SCIENTIFIC CORP., having
offices at 4455 E. Camelback  Road,  Suite E160,  Phoenix,  Arizona  85018,  its
successors  and  assigns,  the entire  right,  title and  interest in and to the
improvements  of  MONOLITHIC  INDUCTOR WITH MAGNETIC FLUX LINES GUIDED AWAY FROM
SUBSTRATE,  (the Invention)  invented by us, as described in the application for
United States Patent  Application  Serial No.  08/962,377  filed 31 October 1997
(M&G  Docket  Number  2238-020),  and any and all  applications  for  patent and
patents  therefor in any and all countries,  including all divisions,  reissues,
continuations and extensions thereof,  and all rights of priority resulting from
the filing of said United  States  application,  and  authorize  and request any
official  whose  duty it is to  issue  patents,  to  issue  any  patent  on said
improvements or resulting  therefrom to said NATIONAL  SCIENTIFIC  CORP., or its
successors   or  assigns  and  agree  that  on  request   and  without   further
consideration,  but at  the  expense  of  NATIONAL  SCIENTIFIC  CORP.,  we  will
communicate  to  said  NATIONAL  SCIENTIFIC  CORP.,  or its  representatives  or
nominees,  any facts known to us respecting said improvements and testify in any
legal proceeding, sign all lawful papers, execute all divisional, continuing and
reissue  applications,  make all  rightful  oaths and  generally  do  everything
possible to aid NATIONAL SCIENTIFIC CORP., its successors, assigns and nominees,
to obtain  and  enforce  proper  patent  protection  for said  invention  in all
countries.  The  above-discussed  conditions  are as follows:  a) that  NATIONAL
SCIENTIFIC  CORP.  pay all costs related to United States  filing,  prosecution,
issuance,  and  maintenance  of United  States  Patent  Application  Serial  No.
08/962,377,  b) that NATIONAL  SCIENTIFIC  CORP. pay all consulting fees owed to
the inventors with respect to the Invention,  c) that NATIONAL  SCIENTIFIC CORP.
pay 1% of all
<PAGE>
ASSIGNMENT
S/N: 08/962,377
Page: 2

gross sales  related to the  Invention to EL-BADAWY  AMIEN  EL-SHARAWY,  d) that
NATIONAL  SCIENTIFIC CORP. pay 1% of all gross sales related to the Invention to
MAJID M. HASHEMI,  e) that NATIONAL SCIENTIFIC CORP. actively develop and market
the Invention, and f) that NATIONAL SCIENTIFIC CORP. remain solvent as evidenced
by refraining from filing for bankruptcy  under U.S.  Bankruptcy law. Should any
of the above-discussed  conditions fail to be met, then this Assignment shall be
deemed void AB INITIO.  The Inventors  covenant  with said  NATIONAL  SCIENTIFIC
CORP.,  its successors and assigns,  that the rights and property hereby covered
are free and clear of any encumbrances,  and that they have full right to convey
the same as herein expressed. 3/23/98 DATE Lou Ross

11/16/99                                /s/ Lou Ross
- --------                                ----------------------------------------
DATE                                    Lou Ross
                                        Chairman and C.E.O.
                                        NATIONAL SCIENTIFIC CORP.


STATE OF ARIZONA    )
                    ) ss
County of Maricopa  )


     On this 23 day of  March  1998,  before  me,  the  undersigned,  personally
appeared Lou Ross,  known to me to be the person whose name is subscribed to the
within  instrument,  and  acknowledged  to me that  he  executed  the  foregoing
instrument for the purposes therein contained.

     IN WITNESS WHEREOF, We have set my hand and official seal.

[NOTARY SEAL]                           /s/ Vernon M. Traylor Jr.
                                        ----------------------------------------
                                        NOTARY PUBLIC
<PAGE>
ASSIGNMENT
S/N: 08/962,377
Page: 3


3/31/95                                 /s/ El-Badawy Amien El-Sharawy
- -------                                 ----------------------------------------
DATE                                    EL-BADAWY AMIEN EL-SHARAWY


STATE OF ARIZONA    )
                    ) ss
County of Maricopa  )


     On this 31st day of March  1998,  before  me, the  undersigned,  personally
appeared EL-BADAWY AMIEN EL-SHARAWY,  known to me to be the person whose name is
subscribed to the within instrument, and acknowledged to me that he executed the
foregoing instrument for the purposes therein contained.

     IN WITNESS WHEREOF, We have set my hand and official seal.

                                        /s/ Flora D. DeBeer
                                        ----------------------------------------
                                        NOTARY PUBLIC

          (SEAL)                        Commission Expires July 22, 1999


4-15-98                                 /s/ Majid M. Hashemi
- -------                                 ----------------------------------------
DATE                                    MAJID M. HASHEMI

STATE OF CALIFORNIA    )
                       ) ss
County of Santa Clara  )

     On this 15th day of April  1998,  before  me, the  undersigned,  personally
appeared MAJID M. HASHEMI, known to me to be the person whose name is subscribed
to the within instrument,  and acknowledged to me that he executed the foregoing
instrument for the purposes therein contained.

     IN WITNESS WHEREOF, We have set my hand and official seal.

                                        /s/ Hae R. Choi
                                        ----------------------------------------
                                        NOTARY PUBLIC

         (NOTARY SEAL)

                                   ASSIGNMENT

     In consideration of Ten Dollars ($10.00) and other valuable  consideration,
of which we acknowledge  receipt,  we, EL-BADAWY AMIEN EL-SHARAWY,  of 1434 East
Spur Avenue, Gilbert, Arizona 85296, and MAJID M. HASHEMI, of 1363 Corte Bonita,
San Jose CA 95120,  (the  Inventors)  hereby  sell,  and assign,  subject to the
conditions set forth below, to NATIONAL SCIENTIFIC CORP., having offices at 4455
E. Camelback  Road,  Suite E-160,  Phoenix,  Arizona  85018,  its successors and
assigns,  the entire  right,  title and interest in and to the  improvements  of
MONOLITHIC  INDUCTOR WITH MAGNETIC FLUX LINES GUIDED AWAY FROM  SUBSTRATE,  (the
Invention)  invented by us, as described in the  application  for United  States
Patent (M&G Docket Number 2238-020CIP),  and any and all applications for patent
and  patents  therefor  in any  and  all  countries,  including  all  divisions,
reissues,  continuations  and  extensions  thereof,  and all rights of  priority
resulting from the filing of said United States  application,  and authorize and
request any official whose duty it is to issue  patents,  to issue any patent on
said improvements or resulting  therefrom to said NATIONAL  SCIENTIFIC CORP., or
its  successors  or  assigns  and agree  that on  request  and  without  further
consideration,  but at  the  expense  of  NATIONAL  SCIENTIFIC  CORP.,  we  will
communicate  to  said  NATIONAL  SCIENTIFIC  CORP.,  or its  representatives  or
nominees,  any facts known to us respecting said improvements and testify in any
legal proceeding, sign all lawful papers, execute all divisional, continuing and
reissue  applications,  make all  rightful  oaths and  generally  do  everything
possible to aid NATIONAL SCIENTIFIC CORP., its successors, assigns and nominees,
to obtain  and  enforce  proper  patent  protection  for said  invention  in all
countries.  The  above-discussed  conditions  are as follows:  a) that  NATIONAL
SCIENTIFIC  CORP.  pay all costs related to United States  filing,  prosecution,
issuance,  and  maintenance  of United  States  Patent  Application  Serial  No.
08/962,377,  b) that NATIONAL  SCIENTIFIC  CORP. pay all consulting fees owed to
the inventors with respect to the Invention,  c) that NATIONAL  SCIENTIFIC CORP.
pay  1% of  all  gross  sales  related  to  the  Invention  to  EL-BADAWY  AMIEN
EL-SHARAWY, d) that NATIONAL
<PAGE>
ASSIGNMENT
M&G Docket: 2238-O2OCIP
Page: 2

SCIENTIFIC  CORP. pay 1% of all gross sales related to the Invention to MAJID M.
HASHEMI,  e) that  NATIONAL  SCIENTIFIC  CORP.  actively  develop and market the
Invention,  and Q that NATIONAL  SCIENTIFIC CORP. remain solvent as evidenced by
refraining from filing for bankruptcy  under U.S.  Bankruptcy law. Should any of
the  above-discussed  conditions fail to be met, then this  Assignment  shall be
deemed void AB INITIO.  The Inventors  covenant  with said  NATIONAL  SCIENTIFIC
CORP.,  its successors and assigns,  that the rights and property hereby covered
are free and clear of any encumbrances,  and that they have full right to convey
the same as herein expressed.

11/16/99                                /s/ Lou Ross
- --------                                ----------------------------------------
DATE                                    Lou Ross
                                        Chairman and C.E.O.
                                        NATIONAL SCIENTIFIC CORP.

STATE OF ARIZONA    )
                    ) ss
County of Maricopa  )

     On this 16 day of November  1999,  before me, the  undersigned,  personally
appeared Lou Ross,  known to me to be the person whose name is subscribed to the
within  instrument,  and  acknowledged  to me that  he  executed  the  foregoing
instrument for the purposes therein contained.

     IN WITNESS WHEREOF, We have set my hand and official seal.

                                        /s/ Vernon M. Traylor Jr.
                                        ----------------------------------------
[NOTARY SEAL]                           NOTARY PUBLIC

11/15/99                                /s/ El-Badawy Amien El-Sharawy
- --------                                ----------------------------------------
DATE                                    EL-BADAWY AMIEN EL-SHARAWY
<PAGE>
ASSIGNMENT
M&G Docket: 2238-O2OCIP
Page: 3

STATE OF ARIZONA    )
                    ) ss
County of Maricopa  )

     On this 15 day of November  1999,  before me, the  undersigned,  personally
appeared EL-BADAWY AMIEN EL-SHARAWY,  known to me to be the person whose name is
subscribed to the within instrument, and acknowledged to me that he executed the
foregoing instrument for the purposes therein contained.

     IN WITNESS WHEREOF, We have set my hand and official seal.

[NOTARY SEAL]
                                        NOTARY PUBLIC

11/15/99                                /s/ Majid M. Hashemi
- --------                                ----------------------------------------
DATE                                    MAJID M. HASHEMI

STATE OF ARIZONA    )
                    ) ss
County of Maricopa  )

     On this 15 day of November  1999,  before me, the  undersigned,  personally
appeared MAJID M. HASHEMI, known to me to be the person whose name is subscribed
to the within instrument,  and acknowledged to me that he executed the foregoing
instrument for the purposes therein contained.

     IN WITNESS WHEREOF, We have set my hand and official seal.


                                        /s/ Vernon M. Traylor Jr.
                                        ----------------------------------------
                                        NOTARY PUBLIC
[NOTARY SEAL]

                                   ASSIGNMENT

     In consideration of Ten Dollars ($10.00) and other valuable  consideration,
of which we acknowledge  receipt,  we, EL-BADAWY AMIEN EL-SHARAWY,  of 1434 East
Spur Avenue, Gilbert,  Arizona 85296, and MAJID M. HASHEMI, of 1030 E. El Camino
Real, No. 502,  Sunnyvale,  CA 94087,  (the Inventors)  hereby sell, and assign,
subject to the conditions set forth below, to NATIONAL  SCIENTIFIC CORP., having
offices at 4455 E. Camelback  Road,  Suite E160,  Phoenix,  Arizona  85018,  its
successors  and  assigns,  the entire  right,  title and  interest in and to the
improvements of STATIC MEMORY CELL WITH LOAD CIRCUIT USING A TUNNEL DIODE,  (the
Invention)  invented by us, as described in the  application  for United  States
Patent  Application  Serial No.  08/991,966  filed 17 December  1997 (M&G Docket
Number  2238-040),  and any and all applications for patent and patents therefor
in any and all countries, including all divisions,  reissues,  continuations and
extensions thereof, and all rights of priority resulting from the filing of said
United States application,  and authorize and request any official whose duty it
is to issue  patents,  to issue any  patent on said  improvements  or  resulting
therefrom to said NATIONAL  SCIENTIFIC  CORP.,  or its successors or assigns and
agree that on request and without further  consideration,  but at the expense of
NATIONAL  SCIENTIFIC  CORP.,  we will  communicate  to said NATIONAL  SCIENTIFIC
CORP., or its representatives or nominees, any facts known to us respecting said
improvements  and  testify  in any legal  proceeding,  sign all  lawful  papers,
execute all divisional,  continuing and reissue applications,  make all rightful
oaths and generally do everything possible to aid NATIONAL SCIENTIFIC CORP., its
successors, assigns and nominees, to obtain and enforce proper patent protection
for said  invention in all  countries.  The  above-discussed  conditions  are as
follows:  a) that  NATIONAL  SCIENTIFIC  CORP.  pay all costs  related to United
States filing,  prosecution,  issuance,  and maintenance of United States Patent
Application  Serial No.  08/991,966,  b) that NATIONAL  SCIENTIFIC CORP. pay all
consulting  fees owed to the inventors  with respect to the  Invention,  c) that
NATIONAL  SCIENTIFIC CORP. pay 1% of all gross sales related to the Invention to
EL-BADAWY AMIEN
<PAGE>
ASSIGNMENT
S/N: 08/991,966
Page: 2

EL-SHARAWY,  d) that NATIONAL SCIENTIFIC CORP. pay 1% of all gross sales related
to the Invention to MAJID M. HASHEMI, e) that NATIONAL SCIENTIFIC CORP. actively
develop and market the Invention,  and f) that NATIONAL  SCIENTIFIC CORP. remain
solvent  as  evidenced  by  refraining  from  filing for  bankruptcy  under U.S.
Bankruptcy  law.  Should any of the  above-discussed  conditions fail to be met,
then this Assignment shall be deemed void AB INITIO. The Inventors covenant with
said NATIONAL SCIENTIFIC CORP., its successors and assigns,  that the rights and
property  hereby covered are free and clear of any  encumbrances,  and that they
have full right to convey the same as herein expressed.

4/2/98                                  /s/ Lou Ross
- ------                                  ----------------------------------------
DATE                                    Lou Ross
                                        Chairman and C.E.O.
                                        NATIONAL SCIENTIFIC CORP.

STATE OF ARIZONA    )
                    ) ss
County of Maricopa  )

     On  this 2 day of  April  1998,  before  me,  the  undersigned,  personally
appeared Lou Ross,  known to me to be the person whose name is subscribed to the
within  instrument,  and  acknowledged  to me that  he  executed  the  foregoing
instrument for the purposes therein contained.

     IN WITNESS WHEREOF, We have set my hand and official seal.

                                        /s/ Vernon M. Traylor Jr.
                                        ----------------------------------------
[NOTARY SEAL]                           NOTARY PUBLIC
<PAGE>
ASSIGNMENT
S/N: 08/991,966
Page: 3


4/16/98                                 /s/ El-Badawy Amien El-Sharawy
- -------                                 ----------------------------------------
DATE                                    EL-BADAWY AMIEN EL-SHARAWY


STATE OF ARIZONA    )
                    ) ss
County of Maricopa  )

     On this 16th day of April  1998,  before  me, the  undersigned,  personally
appeared EL-BADAWY AMIEN EL-SHARAWY,  known to me to be the person whose name is
subscribed to the within instrument, and acknowledged to me that he executed the
foregoing instrument for the purposes therein contained.

     IN WITNESS WHEREOF, We have set my hand and official seal.

                                        /s/ Mary M. Sitter
                                        ----------------------------------------
[NOTARY SEAL]                           NOTARY PUBLIC


4/27/98                                 /s/ Majid M. Hashemi
- -------                                 ----------------------------------------
DATE                                    MAJID M. HASHEMI


STATE OF California      )
                         ) ss
County of Santa Clara    )

     On this 27th day of April  1998,  before  me, the  undersigned,  personally
appeared MAJID M. HASHEMI, known to me to be the person whose name is subscribed
to the within instrument,  and acknowledged to me that he executed the foregoing
instrument for the purposes therein contained.

     IN WITNESS WHEREOF, We have set my hand and official seal.

                                        /s/ Hae R. Choi
                                        ----------------------------------------
[NOTARY SEAL]                           NOTARY PUBLIC

                                   ASSIGNMENT

     In consideration of Ten Dollars ($10.00) and other valuable  consideration,
of which I acknowledge receipt, I, EL-BADAWY AMIEN EL-SHARAWY, of 1434 East Spur
Avenue, Gilbert,  Arizona 85296, (the Inventor) hereby sell, and assign, subject
to the conditions set forth below, to NATIONAL  SCIENTIFIC CORP., having offices
at 4455 E. Camelback Road,  Suite E160,  Phoenix,  Arizona 85018, its successors
and assigns,  the entire right, title and interest in and to the improvements of
TE(OYS) MODE DIELECTRIC  RESONATOR (the Invention)  invented by me, as described
in the  application  for United States Patent  Application  filed  herewith (M&G
Docket Number  2238-050),  and any and all  applications  for patent and patents
therefor  in  any  and  all  countries,   including  all  divisions,   reissues,
continuations and extensions thereof,  and all rights of priority resulting from
the filing of said United  States  application,  and  authorize  and request any
official  whose  duty it is to  issue  patents,  to  issue  any  patent  on said
improvements or resulting  therefrom to said NATIONAL  SCIENTIFIC  CORP., or its
successors   or  assigns  and  agree  that  on  request   and  without   further
consideration,  but  at  the  expense  of  NATIONAL  SCIENTIFIC  CORP.,  I  will
communicate  to  said  NATIONAL  SCIENTIFIC  CORP.,  or its  representatives  or
nominees,  any facts known to me respecting said improvements and testify in any
legal proceeding, sign all lawful papers, execute all divisional, continuing and
reissue  applications,  make all  rightful  oaths and  generally  do  everything
possible to aid NATIONAL SCIENTIFIC CORP., its successors, assigns and nominees,
to obtain  and  enforce  proper  patent  protection  for said  invention  in all
countries.  The  above-discussed  conditions  are as follows:  a) that  NATIONAL
SCIENTIFIC  CORP.  pay all costs related to United States  filing,  prosecution,
issuance,  and  maintenance  of  the  United  States  Patent  Application  filed
herewith, b) that NATIONAL SCIENTIFIC CORP. pay all consulting fees and/or other
consideration  owed to the  Inventor  with  respect  to the  Invention,  c) that
NATIONAL  SCIENTIFIC CORP. pay 2% of all gross sales related to the Invention to
the Inventor,  d) that NATIONAL SCIENTIFIC CORP. actively develop and market the
Invention, and e) that NATIONAL SCIENTIFIC CORP. remain
<PAGE>
ASSIGNMENT
TE076 MODE DIELECTRIC RESONATOR
Page: 2

solvent  as  evidenced  by  refraining  from  filing for  bankruptcy  under U.S.
Bankruptcy  law.  Should any of the  above-discussed  conditions fail to be met,
then this Assignment shall be deemed void AB INITIO. The Inventor covenants with
said NATIONAL SCIENTIFIC CORP., its successors and assigns,  that the rights and
property hereby covered are free and clear of any encumbrances,  and that he has
full right to convey the same as herein expressed.

6/18/98                                 /s/ Lou Ross
- -------                                 ----------------------------------------
DATE                                    Lou Ross
                                        Chairman and C.E.O.
                                        NATIONAL SCIENTIFIC CORP.

STATE OF ARIZONA    )
                    ) ss
County of Maricopa  )

     On  this  18 day of June  1998,  before  me,  the  undersigned,  personally
appeared Lou Ross,  known to me to be the person whose name is subscribed to the
within  instrument,  and  acknowledged  to me that  he  executed  the  foregoing
instrument for the purposes therein contained.

     IN WITNESS WHEREOF, We have set my hand and official seal.

                                        /s/ Vernon M. Traylor Jr.
                                        ----------------------------------------
[NOTARY SEAL]                           NOTARY PUBLIC
<PAGE>
ASSIGNMENT
TE(OYS) MODE DIELECTRIC RESONATOR
Page: 3

6/18/95                                 /s/ El-Badawy Amien El-Sharawy
- -------                                 ----------------------------------------
DATE                                    EL-BADAWY AMIEN EL-SHARAWY


STATE OF ARIZONA    )
                    ) ss
County of Maricopa  )

     On  this  18 day of June  1998,  before  me,  the  undersigned,  personally
appeared EL-BADAWY AMIEN EL-SHARAWY,  known to me to be the person whose name is
subscribed to the within instrument, and acknowledged to me that he executed the
foregoing instrument for the purposes therein contained.

     IN WITNESS WHEREOF, We have set my hand and official seal.

                                        /s/ Vernon M. Traylor Jr.
                                        ----------------------------------------
                                        NOTARY PUBLIC

                                   ASSIGNMENT

     In consideration of Ten Dollars ($10.00) and other valuable  consideration,
of which I acknowledge receipt, I, EL-BADAWY AMIEN EL-SHARAWY, of 1434 East Spur
Avenue, Gilbert,  Arizona 85296, (the Inventor) hereby sell, and assign, subject
to the conditions set forth below, to NATIONAL  SCIENTIFIC CORP., having offices
at 4455 E. Camelback Road,  Suite E160,  Phoenix,  Arizona 85018, its successors
and assigns,  the entire right, title and interest in and to the improvements of
DISTRIBUTED  AMPLIFIER AND METHOD THEREFOR,  (the Invention)  invented by me, as
described in the application for United States Patent Application filed herewith
(M&G  Docket  Number  2238-030),  and any and all  applications  for  patent and
patents  therefor in any and all countries,  including all divisions,  reissues,
continuations and extensions thereof,  and all rights of priority resulting from
the filing of said United  States  application,  and  authorize  and request any
official  whose  duty it is to  issue  patents,  to  issue  any  patent  on said
improvements or resulting  therefrom to said NATIONAL  SCIENTIFIC  CORP., or its
successors   or  assigns  and  agree  that  on  request   and  without   further
consideration,  but  at  the  expense  of  NATIONAL  SCIENTIFIC  CORP.,  I  will
communicate  to  said  NATIONAL  SCIENTIFIC  CORP.,  or its  representatives  or
nominees,  any facts known to me respecting said improvements and testify in any
legal proceeding, sign all lawful papers, execute all divisional, continuing and
reissue  applications,  make all  rightful  oaths and  generally  do  everything
possible to aid NATIONAL SCIENTIFIC CORP., its successors, assigns and nominees,
to obtain  and  enforce  proper  patent  protection  for said  invention  in all
countries.  The  above-discussed  conditions  are as follows:  a) that  NATIONAL
SCIENTIFIC  CORP.  pay all costs related to United States  filing,  prosecution,
issuance,  and  maintenance  of  the  United  States  Patent  Application  filed
herewith, b) that NATIONAL SCIENTIFIC CORP. pay all consulting fees and/or other
consideration  owed to the  Inventor  with  respect  to the  Invention,  c) that
NATIONAL  SCIENTIFIC CORP. pay 2% of all gross sales related to the Invention to
the Inventor,  d) that NATIONAL SCIENTIFIC CORP. actively develop and market the
Invention, and e) that NATIONAL SCIENTIFIC CORP. remain
<PAGE>
ASSIGNMENT
DISTRIBUTED AMPLIFIER AND METHOD THEREFOR
Page: 2

solvent  as  evidenced  by  refraining  from  filing for  bankruptcy  under U.S.
Bankruptcy  law.  Should any of the  above-discussed  conditions fail to be met,
then this Assignment shall be deemed void AB INITIO. The Inventor covenants with
said NATIONAL SCIENTIFIC CORP., its successors and assigns,  that the rights and
property hereby covered are free and clear of any encumbrances,  and that he has
full right to convey the same as herein expressed.

July 10, 1998                           /s/ Lou Ross
- -------------                           ----------------------------------------
DATE                                    Lou Ross
                                        Chairman and C.E.O.
                                        NATIONAL SCIENTIFIC CORP.


STATE OF ARIZONA    )
                    ) ss
County of Maricopa  )

     On  this  10 day of July  1998,  before  me,  the  undersigned,  personally
appeared Lou Ross,  known to me to be the person whose name is subscribed to the
within  instrument,  and  acknowledged  to me that  he  executed  the  foregoing
instrument for the purposes therein contained.

     IN WITNESS WHEREOF, We have set my hand and official seal.

                                        /s/ Vernon M. Traylor Jr.
                                        ----------------------------------------
[NOTARY SEAL]                           NOTARY PUBLIC
<PAGE>
ASSIGNMENT
DISTRIBUTED AMPLIFIER AND METHOD THEREFOR
Page: 3


7/8/98                                  /s/ El-Badawy Amien El-Sharawy
- ------                                  ----------------------------------------
DATE                                    EL-BADAWY AMIEN EL-SHARAWY

STATE OF ARIZONA    )
                    ) ss
County of Maricopa  )

     On this  8th day of July  1998,  before  me,  the  undersigned,  personally
appeared EL-BADAWY AMIEN EL-SHARAWY,  known to me to be the person whose name is
subscribed to the within instrument, and acknowledged to me that he executed the
foregoing instrument for the purposes therein contained.

     IN WITNESS WHEREOF, We have set my hand and official seal.

                                        /s/ Mary M. Sittu
                                        ----------------------------------------
[NOTARY SEAL]                           NOTARY PUBLIC

                                   ASSIGNMENT

     In consideration of Ten Dollars ($10.00) and other valuable  consideration,
of which I acknowledge receipt, I, EL-BADAWY AMIEN EL-SHARAWY, of 1434 East Spur
Avenue, Gilbert,  Arizona 85296, (the Inventor) hereby sell, and assign, subject
to the conditions set forth below, to NATIONAL  SCIENTIFIC CORP., having offices
at 4455 E. Camelback Road,  Suite E160,  Phoenix,  Arizona 85018, its successors
and assigns,  the entire right, title and interest in and to the improvements of
DIELECTRIC  RESONATOR  (the  Invention)  invented  by me,  as  described  in the
application  for United States  Patent  Application  filed  herewith (M&G Docket
Number  2238-O5OCIP1),  and any and all  applications  for  patent  and  patents
therefor  in  any  and  all  countries,   including  all  divisions,   reissues,
continuations and extensions thereof,  and all rights of priority resulting from
the filing of said United  States  application,  and  authorize  and request any
official  whose  duty it is to  issue  patents,  to  issue  any  patent  on said
improvements or resulting  therefrom to said NATIONAL  SCIENTIFIC  CORP., or its
successors   or  assigns  and  agree  that  on  request   and  without   further
consideration,  but  at  the  expense  of  NATIONAL  SCIENTIFIC  CORP.,  I  will
communicate  to  said  NATIONAL  SCIENTIFIC  CORP.,  or its  representatives  or
nominees,  any facts known to me respecting said improvements and testify in any
legal proceeding, sign all lawful papers, execute all divisional, continuing and
reissue  applications,  make all  rightful  oaths and  generally  do  everything
possible to aid NATIONAL SCIENTIFIC CORP., its successors, assigns and nominees,
to obtain  and  enforce  proper  patent  protection  for said  invention  in all
countries.  The  above-discussed  conditions  are as follows:  a) that  NATIONAL
SCIENTIFIC  CORP.  pay all costs related to United States  filing,  prosecution,
issuance,  and  maintenance  of  the  United  States  Patent  Application  filed
herewith, b) that NATIONAL SCIENTIFIC CORP. pay all consulting fees and/or other
consideration  owed to the  Inventor  with  respect  to the  Invention,  c) that
NATIONAL  SCIENTIFIC CORP. pay 2% of all gross sales related to the Invention to
the Inventor,  d) that NATIONAL SCIENTIFIC CORP. actively develop and market the
Invention, and e) that NATIONAL SCIENTIFIC CORP. remain
<PAGE>
ASSIGNMENT
DIELECTRIC RESONATOR
Page: 2

solvent  as  evidenced  by  refraining  from  filing for  bankruptcy  under U.S.
Bankruptcy  law.  Should any of the  above-discussed  conditions fail to be met,
then this Assignment shall be deemed void AB INITIO. The Inventor covenants with
said NATIONAL SCIENTIFIC CORP., its successors and assigns,  that the rights and
property hereby covered are free and clear of any encumbrances,  and that he has
full right to convey the same as herein expressed.

12/18/98                                /s/ Lou Ross
- --------                                ----------------------------------------
DATE                                    Lou Ross
                                        Chairman and C.E.O.
                                        NATIONAL SCIENTIFIC CORP.

STATE OF ARIZONA    )
                    ) ss
County of Maricopa  )

     On this 18 day  December  1998,  before  me,  the  undersigned,  personally
appeared Lou Ross,  known to me to be the person whose name is subscribed to the
within  instrument,  and  acknowledged  to me that  he  executed  the  foregoing
instrument for the purposes therein contained.

     IN WITNESS WHEREOF, We have set my hand and official seal.


                                        /s/ Vernon M. Traylor Jr.
                                        ----------------------------------------
[NOTARY SEAL]                           NOTARY PUBLIC
<PAGE>
ASSIGNMENT
DIELECTRIC RESONATOR
Page: 3


12/18/98                                /s/ El-Badawy Amien El-Sharawy
- --------                                ----------------------------------------
DATE                                    EL-BADAWY AMIEN EL-SHARAWY

STATE OF ARIZONA    )
                    ) ss
County of Maricopa  )

     On this 18 day of December  1998,  before me, the  undersigned,  personally
appeared EL-BADAWY AMIEN EL-SHARAWY,  known to me to be the person whose name is
subscribed to the within instrument, and acknowledged to me that he executed the
foregoing instrument for the purposes therein contained.

     IN WITNESS WHEREOF, We have set my hand and official seal.

                                        /s/ Jeannette A. Ochoa
                                        ----------------------------------------
[NOTARY SEAL]                           NOTARY PUBLIC

<TABLE> <S> <C>

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<PERIOD-START>                             OCT-01-1999
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